Sorry she can't deal with injuries; taking care of animals often involves cleaning 'em up. When my cats went outdoors, I dealt with it a lot more often, but the dogs like to hide their little "ow-ies" from me until they're really gross.... All of my dogs until the current Mr. Dog have been good about allowing "Mommy" to treat them, but he's wound much too tight for that (phobic/anxiety-ridden in many ways, poor guy). I can put a compress on him, but that's about it; he goes NUTS. (I'm waiting for 9 to 10 inches of bruising on my right hand and forearm to heal due to a head-slam when I tried to examine his right forefoot on the 12th of this month--was it a foxtail? a lick granuloma? WHAM!)
Ahem.
Anyway, taking care of animals has its gross aspects. Indoor-only cats get hairballs even when they're brushed and combed, so there's that to clean up. My two neutered male cats love each other, but they wrestle pretty hard, so I clean them regularly for little spots of blood. (I also trim their nails every week as well as when I feel a "pointy" nail in between times.) We've had quite the flea season here; I've flea-combed and -bathed the cats.
Parsley Graybuns, the Am.Chin rabbit, hasn't had any problems--yet--but he's a solo rabbit. For now.
I wonder if the kits were rolling over one another and a claw caught on this one's back?
You've done the worst (grossest) part. Personally, I'd clipper off a little more hair so that the hair can't get into the wound.
I'm not sure if this works with rabbits, but if you don't have Monuka honey (there are several spellings of that word running around), keep applying warm compresses two or three times a day to keep the wound draining. This little one might appreciate some peace and quiet (and warmth) while recuperating, but I'll let the actual rabbit raisers advise you on that aspect of things.