My 2 rabbit sisters had their op on friday, they seem to be back to their usual selves today cleaning eachother and sleeping next to eachother- or so I thought. I left their room (they are indoor buns) and came downstairs for a drink when I heard loud scuffling, I ran back upstairs and one of them was attacking the other one, which is unusual as they have never fought before, i seperated them straight away and then 20 mins later allowed them near eachother again and the same thing happened, she was attacked again and chased. so far I have left one in the cage and the other out of the cage to prevent fighting but so they can still see/smell eachother but what else can I do to ensure they will be best of friends again soon, I’d hate to see them seperated as they were best friends before earlier today 🙁 I feel SOO guilty any help please as im so worried

another thing is one of them (the one who was attacked) had a matt of feces stuck underneath her and urine all over her fur so ive tried to clean this off but cannot get it all as she is panicing too much, i feel so guilty as shes already had an op, been attacked her her own sister and is now alone and then man handled to try clean her.