Definitely have your friend look over her rabbit very carefully for any injuries. It could just be something small like scraping against a wire in her cage or a clipped nail. If it is something bigger that is bleeding badly, you should probably see a vet about it. Also, start putting hay into her diet? :/ Not all at once, I think that would be too much of a shock on her system, but little by little. And I VERY strongly suggest taking her to see a vet, ASAP. It could be something internal that she is peeing out or it could be in her poop and may even turn out to be fatal. Also, if you do see a vet, ask him/her about my suggestions before implementing them, I am experienced and have done my research but am definitely no professional. Hope this helps!

She needs a vet ASAP. It could be a UTI, a stone, internal bleeding, cancers, ect. Your friend should also fix the buns diet. Bunnies need a diet of about 70percernt hay.

If the blood comes from her urinary/reproductive tract, she does need to see a vet. Since she is young, cancer is less likely than a UTI, but she’d still need treatment.

Pictures would be great!

What are we looking at hear? It looks like a sore or lesion. Could be syphilis and the sore broke open either from grooming or rubbing.

Whatever it may be, that stuff needs to be checked by a competent vet asap! D:

Is that a swollen genital area? You mean moving around like wriggling worms? That bunny needs to see a vet quickly…

Could it be some type of prolapse (meaning a bit of the uterus or intestine hanging out)? It’s difficult to make real sense of what it is in the pix. Can you link to the video your friend sent you?

The rabbit of course needs to see a vet. Are there any no kill shelters/rescues in your area that you could perhaps ask for help? The people working in shelters as a rule have seen lots of things, and they might be able to refer this rabbit to a vet they use.

Could “she” be a “he” perhaps? Its a bit hard to tell what area we are looking at from the photos. But I though maybe a scrotal sac or scotal hernia? Or an abscess that has burst. But with it going in when picked up, Im even more suspcious that it’s a testicle descending and ascending..
Did the first owner have other rabbits that this one was with?

I think I would be inclined to take the bun to the nearest vet, even if they don’t normally see a lot of rabbits. They would at least have a better idea of what they’re looking at then us.

It looks like it’s next to the anus. If that is the genital area in the picture. Like I said, it’s sort of hard to tell from those pictures. Whatever it is, it looks angry and I can see where it’s bleeding. This is why I thought perhaps it was a sore, like from a syphilis infection. But if you say it goes in when the bun is picked up… hmm… Or is it simply “going in” because they sort of suck that area in naturally. If it’s painful, they may be relaxing the muscles there so stuff isn’t touching anything. I don’t know. Anyway, a vet really does need to look at it. None of the things mentioned are really treatable at home. Syphilis, for example, requires antibiotics. A prolapse or hernia would need surgery.