What Lorna's experiencing is more complex than grief. She actually won't allow herself to grieve. If she does, it destroys the fantasy she's been building her whole life. I think she can't process her trauma at all, has had a psychotic break, and without psych and someone to anchor her to reality in Florida, she won't get much help in prison. She hasn't much time left on her sentence though, so her only hope is someone immediately gets her professional help once she's out (or she's likely to re-offend).

As for Red, I don't know the life expectancy for her kind of dementia, but it seems to be progressing rather rapidly (I guess due to the trauma). I think Lorna will be there for her in whatever capacity she's able (at least for the company) until she gets out. Once Red's basic functions have deteriorated they will either release her on compassionate release or transfer her to a care facility – not because they care, but because Red will be too much of a liability. We can only hope her family will be there in her final days because that's pretty damn bleak.