Welcome to the forums – I definitely don’t mean to be negative, but I sort of agree with JackRabbit on this one.
It sounds like you’re going through a tremendous lot – more than a lot of people go through – and this may just not be the right time for you to have another thing that you have to take care of on your plate. As JR said, there’s absolutely no shame whatsoever in finding another great home for her to live in if you feel like you can’t properly take care of her.
It’s not an easy or flippant decision to re-home a pet… but it may also be the least selfish decision in this case.
I want to make it clear that I’m not trying to pressure or shame you, as I’m sure no one else here would, but my concerns are that you have so much going on right now and you’re under so much pressure and have so much stress that she seems to be serving as another source of stress as opposed to a stress reliever, which is sort of one of the benefits of having a pet in the first place, and that with all you’re experiencing now, it may not be the healthiest or even the safest place for her to live in right now. You mentioned, for example, that she was without food for 24 hours more than once – rabbits can die pretty quickly from not having enough food or water, especially hay. They can die from this much more quickly than other animals like dogs or cats.
As for bonking her on the noggin, well – I’d suggest never doing that again. For starters you might inadvertently harm her, but she also will come to see you as a threat and a predator, and may even resort to biting you out of annoyance or fear.
Otherwise, Sarita gave some great advice and I suggest following those tips.
Good luck!