Yeeeeah. We had a couple of nannies for the kids when we needed childcare but they were too young to go to preschool, and it was... interesting, because of this tension. The whole experience taught me, looking back on it, that for a weird job like this where you're all but living with the family, personality fit (and maybe even more specifically, communication style??) with parents is way more important a component than one might realize (or at least than I realized), and a nanny can be great with the kids and yet both adult parties can be unhappy through no fault (or at least, not much fault) of the individual parties.