Firstly 2 nights' babysitting during the week included in the deal. We personally pay for Saturday nights (but not Friday.) We pay £5 p/h for the babysitting.
OP: it sounds like you've had the discussion with her and she's kind of ignoring it for whatever reason - the cooking thing may be the reason.
There's a big difference between Becky's scenario (and that horrible Upstairs Downstairs thing of making her use the separate door - honestly, did these people have dilusions of grandeur?) and what you need to carve out for yourself.
We're on third AP. First AP ate with us most nights (not w/e) but went to bed right after dinner giving DP and me some couple time. After XMAS she tended to eat on her own or went out w/friends. We wondered whether a worse diet contributed to the regular colds she hda but generally speaking the arrangement worked.
Second AP - lovely personality but ate with us virtually every night (not EVERY weekend night too but many) and stayed up with DH and me until 11.30 until XMAS. One time we had friends round and she stayed up with all of us until 1 am. Did my head in, drove me mad initially. Big gasp of relief when this all stopped after XMAS But we got to know her well and I felt she really understood us and the girls. SHe had a lovely personality and if she hadn't been as lovely as she was - and interested in the role and being a good au pair - I might have lost it completely. BUT...now I have learned to value this enthusiasm...
Thrid and current AP - eats by herself, including taking her meals upstairs to skype with her boyfriend/fiance who is also an AP almost straightaway when we get back. Part of it is she is prioritising the relationship and is a nervous about stretching herself when it comes to learning English. We have had to carve out seeing her more often for meals as the downside to her never being around is that we end up only seeing her when we have to have a 'chat' about something, which makes us seem difficult, and she wasn't getting to know us very well - understand our thinking about the girls, priorities, etc. I think her commitment to us is less than the others felt. DH actually loves this arrangement because we get lots of free time together but there are downsides.
The best scenario IMO is where the AP eats with you a few nights a week but goes up to her room at a sensible time afterwards - say ten - (if it's big enough) or out to see friends or to a class, etc.
I think what you need to do is the following:
- One night during the week, text her and tell her that you need her to eat with the children as you and DH have something to discuss and need some time on your own. When you come in go: "You've eaten, right?" It sounds like she needs you to be quite direct.
- Tell her Friday and Saturday evenings are your catch up time with DH and you would like her to make her own arrangements. If she doesn't seem to be preparing anything, remind her to do so even if it means you eat later. I think it is reasonable to carve out Fri and Sat as 'date nights' for you and your husband.
- One of the sunday meals arrange to be out for a couple of weeks on the trot but ask her what she needs to prepare her food for her dinner/sunday lunch.
The other nights, I would leave alone really and eat with her.
It sounds like it's too late for this girl, but we try to get very involved in helping our APs make friends locally (we have an AP barbeque!), introduce them to people, get to an English class, get involved in a hobby (our other APs have all done stuff locally.) This really does help.
Good luck.