AD do not sweat it! My S6 was the exact same way, we never put him in daycare as I stayed home with him.He was very very shy and would not talk to any adults at all except us. And it even took him a while to play with the neighbor kids until I invited them over to play. I think it is a stage they go through, because now you can not get a word in at all when my son is talking.
He has changed immensely since he went to kindergarten and is now a social bug. He is very polite with all adults and very personable. I know the situation is tough on everyone especially Abby, but I would not get to crazy about her behaviors unless something drastically does not change. I think once she is exposed to more kids in a controlled but yet fun environment you will see the difference night and day!!
