I think Annabeth gave Lyn a chew toy. Apparently she was choosing between a dog, a cat, or a snake. Also I don't think Meirin even knows Lyn or her parents personally. Athalus and Mar are like those two couples that everyone sees but no one really interacts with because the woman has the man whipped, and the woman only cares about going about her business, dragging her man along. You know the type.