We just got back from Princess Trouble's consult with the Pediatric Cardiologist. Her EKG and her chest x-ray are normal and while he could hear the murmur, he said that it was benign and nothing really to worry about. It's not even bad enough to warrant antibiotics during dental surgeries. *whew*
They'll check up on her periodically but he didn't see any problems down the road and said she would most likely grow out of it.
So all is well (except me - I have a nasty cold and I feel like roadkill).