Erin didn't move, leaving her hand still partially extended as she processed Abia's offer to keep the money.  That had never happened before.  Really, she'd seldom enough been given money and sent to buy things in the first place, but not having the money demanded back first thing when she returned was a first.  "Uhm, okay, thanks," she stammered, finally pulling the hand back and dropping the remaining coins in her pocket.  She watched her for a minute more to make sure it hadn't been some sort of joke, then turned back to Nathan to try to figure out if he wanted company or not again.