Ok, possibly I'm being totally unreasonable, but I'm feeling robust and am ready for the caning I'm about to get ....
So, we've got a lovely au pair and my only gripe is that she is so totally relaxed with us (good thing) that she pretty much treats me as I imagine she would treat her own mum when we're out (not an ideal thing at all). For example, when we go to the supermarket, she'll either make off with my trolley or get her own, and just put anything and everything she fancies into it (Tesco Finest Organic stuff that I would never spend the money on myself, the best organic breakfast cereals etc.).
Also, she has 3 days off per week, and on these days I always say that she's still welcome to come with me (and DH if he's there too) wherever I'm going. However, if I'm going out for a girls night out or to lunch with friends, I'd probably prefer her not to come (but I'd never not let her come if she wants to) BUT I do then object to having to pay for a lunch/dinner/night out for someone who's only there as a bit of a favour. Even if she offered to pay, I'd feel happier about refusing and paying for her anyway, but I just feel a bit taken for granted.
We pay for absolutely everything she needs while she's with us, and pay her well above average, plus she's from a very wealthy family, so it's not like she can't pay.
Sooooo.....AIBU...?