help

bunny age: 9 weeks, 700grams

my oldest bunny attacked my little bunny…my oldest was casually eating treats from my hand while the youngest was just laying in a house-bed…i kept my hand there to make sure the other one won t come to her and she just jumped in the house and got her out in her teeth i think idk. i separated them in 2 seconds but the damage was done already. i feel so guilty. the only injury that it has is in photo.

i diluted some betadine in water and i applied it to the youngest with a q tip..she didn t seem to mind too much….she eats, play, and drinks water so she s fine (fight happened 15 hours ago) but my queston is will her hair grow back? is the diluted betadine ok? it is my first time dealing with this

i feel very but very guilty…i think i never want to put them in the same cage..they are separated and that s it i will have 2 big cages..