It seems like chrissycat and Karen offered some good advice. Thankfully buns usually know how to care for their babies, so as long as it looks like she's doing ok there really isn't much to do. In fact I think sometimes the less you try to do the better because then mom doesn't get stressed out. Just make sure she's in a quiet area where she won't be disturbed too much, and that she has a nesting box with something soft in there for her and the baby.