I am glad to hear that you are doing better and so are your kids. It’s great to hear. And you are doing what s good parent needs to do. Your wife’s lack of interest in her children is so telling

Now I know you didn’t ask, but may I suggest if you suspect your daughter has learning disability speak to her teachers and a counselor. Not every struggling student has a disability, but if she does, she might greatly benefit from the help she could get. I’d ask her school what they noticed, if anything.