We're about to choose our first au pair. We're down to two candidates. We have no reservations about the quality of the care they would provide. One is very cheerful and peppy. She seems like she would be a tremendous, energetic, solicitous employee. But we don't think we'll connect with her as much as a person. The other is more casual. We could imagine a little drift between our desires and her execution - nothing serious, of course, just on the margins. However, we think we will connect with this second one on a personal level much more. We suspect she's more likely to feel like part of our family. (Hey, we would give an occasional eye-roll too if we were au pairs.) How to choose? What's more important in an au pair - the employee part or the family-member part?