So glad your grandma is back home. Bless you for all you did, and still are doing. It's great that you and your mom are going to keep up with the grooming.Apologies for dropping off the radar! Here's an update on Blackjack:
My grandma was released from the rehab facility after about a month and was able to go home with in-house care. After she had a week to get back on her feet, Blackjack went back home with her. Since being back with my grandma, Blackjack has had no accidents outside her box when before this was a regular occurrence (my grandma's carers help with scooping Blackjack's box). Now that Blackjack is on a higher quality dry food, she's also not vomiting like she used to. My grandma still isn't really able to brush her, so my aunt and I will be coming over to help her with that and make sure Blackjack gets regular grooming and vet care.
While I was fostering her, Blackjack got all her vaccinations and had a dental, and the vet was able to help me shave off the mats I wasn't able to slip on my own. Blackjack actually didn't need to have any teeth pulled, which was shocking to the vet since there was so much tartar built up on her teeth. Some cats really win the genetic lottery when it comes to teeth! She eventually settled to a point where she was out, happy, and chatty in her "safe space" bedroom, and eating regularly and reliably. However, I was never able to progress toward any sort of an introduction between her and my resident cat, as she would freak out hissing and growling at any sign of him, even just sounds or smells. She's definitely happiest back with my grandma in a house she knows.