Indigo was not an easy cat to know. That was obvious from the start, when I determined her to be male, and named her Iago. She came to me in early April, 2024, as a foster-cat through the rescue-group to which I belong. She had been frequenting a small park in the midst of apartment buildings, and had probably been abandoned. She was spayed but was homeless. Usually, people don’t spend money on fixing a cat, only to desert her. Then, during the veterinary check that told us she was, in fact, female, we were also told that she was diabetic. Faced with the costs and inconveniences of dealing with feline diabetes, her people may have just pushed her out the door, or left her behind when they moved.

Getting her to the veterinary took time. Indigo, as she was eventually re-named, did not like to be handled, initially. I am not surprised, as she turned out to be a strong-willed ladycat, and had been brought to a strange, new world. She was upset. After I learned that she was diabetic, and would require insulin, getting her used to my touch became more urgent.
The best solution to testing her blood-sugar was to attach a sensor to her skin, so that, at least for the fortnight the sensor was active, I could record her numbers, and an advantageous dosage of insulin could be administered. Indigo was corralled - she was becoming a little more co-operative in handling by now - and she went again to the hospital to have the sensor placed. The sequel was not what I had expected.
About an hour after having the sensor fixed on her back, Indigo started licking at it furiously. Then she started to cry and yowl. Eventually, this became growling and hissing. Something had gone amiss and she was in discomfort due to the addition. This went on for a while until she calmed down. I would have to take her to the vet the next day. During the night, she forestalled my plan. She had somehow removed the sensor, despite its sturdy glue. She was calmer after that, but testing for her diabetic numbers would have to come by another method.
As she spent more time in her new home, Indigo became more comfortable with me. She explored the apartment in which we lived at the time, and came to know the other cats. She didn’t care for them, and spent the majority of her time in the library.
This had to change, of course, when we moved in October of 2024. In the new house, Indie stayed for the most part in the bedroom. At first, she preferred the armchair there, but then took up residence on the bed.
She would explore other parts of the house, sometimes coming into the sitting room, even going so far as to climb the cat-trees. But I always thought she felt unwanted there, and I would watch as she eventually wandered back to the bedroom, seemingly sad.
It was partly her own fault. Indigo never came to like the other beasts. In particular, Imogen was, literally, her bête noir. They would fight physically; fur would be thrown but I could never find that blood was drawn. The one cat she didn’t mind was, predictably, Moxy. She tolerated the Mixer in most cases.
I tried the blood-glucose sensor on her one more time, early in 2026. I was prepared for another extreme reaction like the first, but it didn’t occur. The sensor was, however, not much more successful this time than the previous. It stopped working after a day and a half. The day after that, it was missing. She had managed to pull it off yet again, despite the pain she must have felt ripping it off. This time, its loss left strange bruising on her skin, in the centre of the unnecessarily large bare patch the veterinary technicians had shaved.
Indigo never reconciled herself to having her blood drawn for glucose testing. We relied on the fructosimine test, which was accurate enough, and gave a guide for her dosage. Her doctor generally liked what the test had to say.
In addition to diabetes, however, Indigo had to endure bouts of pancreatitis, which made her throw up and turned her appetite off. She also developed nodules along her mammary glands. These were likely cancer. In any case, there was little to be done about them. After these were discovered, she became a ‘sanctuary cat’; a permanent foster-cat, in my care but with health costs still paid for by the rescue-group. No one was going to adopt her.
But, as if realising that she was now with me for the rest of her life, Indie became closer to me. She would lie next to me each night on the bed. So close was her face to mine that her whiskers kept tickling my nose. It became a habit of hers to put her paw on my nose or mouth or eye, to touch my cheek. She would purr heavily while she was next to me like this. I tried to convey how much she was welcome to be next to me, and I hope she found some pleasure in this.
When well, she would look forward to her soft-food meals, sometimes coming out to the kitchen to eat them, but usually being served on the bed. She didn’t like playing very much except when she first came to live with me. Soon, she started treating toys as hostile agents, and growled and fought them, rather than played with them. She didn’t have much fun in her life.
Her dislike of cats certainly didn’t extend to people. The few visitors to the Cosy Cabin would often stop to pet Indigo, and she would rise to greet them, and purr. She would have made a successful only-cat, with a person of her own. That joy was never granted to her.
As her life wound toward what I didn’t know would be its conclusion, Indie became a little less hostile to the other cats, even consenting to lie on the same couch or bed as Imogen. Perhaps she was growing too tired for such anger as she had exhibited before.
Her end came suddenly. She started eating less on the 14th and 15th of July, 2026. A couple of days later, I noticed that she appeared to be breathing with her whole body, great heaves with every inhalation. As another of my foster-cats was destined for her vaccinations that Friday, I took Indigo, too, in to see the doctor. Worries over the way Indie’s lungs sounded led to an x-ray. Her lungs had partially collapsed; she was having difficulty acquiring air, and she was in pain. The nodules on her abdomen had multiplied in number and severity. The doctor thought that what was probably cancer had compressed the lungs. Indigo was not going to get better. I let Indie go, and she died at 4.17 p.m., June 19th, 2026.

My girlcat with the black mask didn’t have the full life she should have. Her animosity toward those of her own species meant that she was limited as to where she went in the Cosy Cabin, and her permanent ill health kept her from having the home that was her right. But I will remember the bright profusion of whiskers…
…and the stinger on her tail…
…and all that went in between that made my friend, Indigo.