Hello – by the sounds of things you just have a young energetic bunny on your hands! As far as the food thing goes you could try putting her away while you eat or when you are eating, get her a treat to eat too? I have these little hay cubes I bought from pets at home that the bunnies take a while to eat.
Have you been taking many steps for the litter training process? I found with Belle that it was easier to litter train her if she had less space to be in. Then the better at litter training she got, the more space she was allowed to explore. I also had more than one litter tray, one in her cage and one in the space she was exploring. I think soaking up the pee with some toilet roll and placing it in the litter tray helps – it makes the scent draw them into the litter tray and eventually teaches them to go in there. What kind of litter are you using? Does she use her litter tray at all?
For brushing, if she won’t let you brush her try wetting your hands and running them over her, it should take some fur off. I’ve heard this works for stubborn bunnies. By the looks of your picture though she is a long hair, so you’ll need to get her accustomed to the brush as it will be important to brush out any tangles. Belle doesn’t particularly like being brushed, but she will let me as long as I pet her head at the same time – so one hand pets the head, the other brushes the body.
For nails I know some people take their bunny to the vet – I have a rescue bunny that won’t let me touch her, so I think that will be my only option for her. For Belle I can’t trim them when she is just sitting there so I need to pick her up and put her on her back. I don’t like doing it as I know it trances her, but it is the most risk free option for her and allows me to go through all of her nails quickly and have her back on all fours in a couple of minutes.
I seem to remember Belle being a little angel and then at about four months she turned into a little monster bun and decided it would be a good time to get into everything she shouldn’t. Think of it as just training them again – it’s sort of like their adolescent stage. If you plan to spay her soon that should really help too. Belle is three now and much more settled, she hasn’t been spayed (I put it off and put it off) but I’m going to spay her soon now I have my other bunny – but it just shows you that the naughty behaviours can be trained out again!
Good luck – and that picture is super cute! Love little bunny feet!