I agree, I think it's just because he's a child. They tend to be louder and mother's have a good sense of who may or may not try to hurt their babies. Not saying the little boy would do so, but children are generally more rough. I would keep the little boy away from her, and maybe put her somewhere a little quieter, where she doesn't have to feel threatened. It's a natural response for a mother to be protective. Most of my girls WILL NOT let anyone else in the room with them when they're delivering or when the babies are really young except me. When Mikayla was in labor my sister walked in the room to tell me something and she flipped...bearing teeth, growling, and barking viciously. Once the babies were born she popped her head up anytime somebody opened the door...she HAD to see who it was. If it was somebody she didn't know, she did the same time...growling and showing teeth. Even Brooke, who is generally sweet and good natured, was very protective of her area. I was the only one who could touch her babies until they were 5 weeks old. Of course, when
I try to leave it's a different story...they will whine and cry until I come back and sit with them.

Spoiled spoiled spoiled...