My name is Zaffre!

I’ve had zaffre for 11yrs and in that time she has never truly warmed up to any human.
When I rescued her from the ASPCA they told me that she was about 2yrs old and extremely feral but I tried to help her anyways.
Recently though, she has been peeing and pooping all over my house all over my things and my children’s things.
She not good at all with my autistic son and he needs my help and attention more than my focus being on cleaning all the random new spots day in and day out.
I never want to bring her to a shelter because she deserves better but that can’t be with me any longer.
Her behavior change needs to be with someone more experienced with senior cats. She is healthy as can be but I know something is up with her and I can’t help her.
I’m hoping someone on here is familiar with these changes and can give her a comfortable quiet life with the yrs she has left!
She is not comfortable in my house with 3 kids under 6, being kids in their house, and that’s not a good life for her🙏