{{{Sean}}}}
Even in a clear-cut relationship (such as, dude, my MOM) sometimes you need to back off and give yourself some breath during a long illness with no end in sight. Sometimes that's harder than being there. Just keep your head above water.
Trudy is wise.
My dad has mentally deteriorated in the 4 years (!) since his first stroke. While he had moments of confusion at the beginning, he now has moments of clarity.
The hardest things for my mom (being the primary caregiver) have been doing things for herself. Putting my dad in a nursing home just about killed her, but she would have literally worked herself to death if she hadn't. He now considers the nursing home "home" and feels safer there.
She has a hard time not going to visit him and sit with him every single day. But, she needs to get away and do things for herself, too. Even if it's just sleep in and recoup. She feels guilty not being with him.
But, in all honesty, my dad's sense of time is not even close to being real, and he doesn't know when she's been there and when she hasn't. She can tell him he was there yesterday when she wasn't and he doesn't know any different.
All of this doesn't make her feel any less guilty for not visiting him every day.
I guess what I'm getting at is that the situation sucks. Feeling guilty for not being with her is totally understandable and normal. But, you need to engage for some self-care, too, or you won't be any good to anyone.