One of mine has a bad nail that is thicker and odd-shaped, and it peels. He had snagged it on my carpet as a baby bun, I remember when it happened.
Did your vet check her for any diseases that would affect the nails?
I know nail trimming can be tricky, my other rabbit, my mini rex, used to require the enlisting of a rabbit-restraint savvy assistant! Many repetitions later, he is much better and I can trim them by myself. Some rabbits trance very readily, have you tried it? My mini rex will not trance or stay in a burrito wrap, but I found another way of doing procedures with him: I will sit him up on my lap, with one hand propping him up under his chest, my thumb between his front legs. Then, before I start anything, I pretend this is a cuddle session, I nudge him with my face on the top of his head and between his ears, until he purrs and slumps a little, you can tell when they stop being tense. Then I trim his nails, but I bought the best kitten clippers I could find, ones that don’t slip out of my hand and that are of ideal size.