My doe has had 2 litters so far (one this past fall and one yesterday). The first litter she had trouble with birth and had 1 stillborn and 4 healthy babies. The nestbox was covered in blood but I cleaned it out and the 4 babies survived. Yesterday she had 6, 4 stillborns and 2 healthy. The 4 stillborns and 1 of the surviving ones were in the front of the box. The living one was covered in blood, struggling but alive. I found the other living one back in her nest, super healthy and clean. I ended up fostering the 2 with one of my other does, just in case the one struggling dies. Why does she keep having bloody stillborn? Is it safe to rebreed her?