Is it ok for a dog to adopt baby bunnies?

My dog (a very tiny chihuahua) just had puppies... Well puppy, she only had one (only 4 days ago). Well my brother brought 3 baby bunnies over to my house saying he had ran them over with a lawn mower and they were the survivors. They appear to be only a few days old because they are basically hairless (just a little fuzz) and their eyes are still closed. Well I rubbed my dog's fur all over my hands really good then rubbed the bunnies and I showed them to her and she adopted them. She cleaned them up and snuggled up with them. They have been in there for a few hours now and seem to be doing well. I'm not sure if they will be able to nurse on her (not sure if her are too big or if dog milk is even good for them because on all the bunny sites it says use Kitten Milk Replacer with a little heavy cream mixed in it). So I think even though she took up with them I'm still going to have to feed them myself. Anyway, my question is: Is it ok for them to be in there with her & her puppy? It is keeping them quite warm, and she licks them to make them potty. Also only 2 of the 3 bunnies are in there with her. The third one has a back leg missing from the lawnmower & we put neosporin + pain reliever on it and bandaged it up, but she didn't want anything to do with that one (I guess bc of the bandage), so my sister in law took that one back home with her. Do you think that one will live? Anything we can do to it/for it? She is going to do the Kitten Milk Replacer & Cream with that one too. Thanks! =)