Thanks a lot. I thought the comment about au pairs who bring a small gift for the children was quite a good indication of how they view the role and good they might be (she didn't bring any kind of gift).
Yes, I think she does feel that unless she is completely on her own then she is "on duty" whereas I feel that she should not just be sitting on the sofa watching TV with the children, but should go out into the garden, play with toys, do puzzles etc. I'm going to leave DH to explain that to her because he was the one who organised it all.
Things were a little better today however. She worked an exact 5 hours of which one consisted of a big stack or ironing whilst I took the children out to the supermarket. This was useful to me so I felt a bit better. Dinner was a bit poor again (spaghetti with cream)- I'm going to have to explain about vegetables. The reason that I thought she would be good with meals is that she said that she cooked for the entire family every day as part of her previous au pair position and that they were vegetarian (which I am) so I thought that she would be good at providing simple, healthy meals. She has brought a cook book with her but doesn't seem to refer to it or remember to give me her list of ingredients. The main reason that I actually wanted her to cook for us is that I am paranoid that I am not a very good cook and I didn't want her to complain about my meals!
BTW her previous position was with a family of 2 girls in Switzerland (she is Swiss) and she used to go home every weekend. So this is completely different for her and must be quite a shock to the system.
She was a bit nicer with the children today although still not exactly warm. She bristles whenever they interrupt a conversation or don't say "please" which I guess is just a cultural clash, although I am trying to be positive and think that I can also learn things from her and her own standards. I think she is extremely patriotic rather than thinking she has got anything to learn from the UK, as she said that her and her mother had gone on a cruise around 10 different countries and after each one they said that Switzerland was much better.
Next week she is having a whole week off while I go on a pre-planned break with my mother and brother. She is going on an intensive English course, which I think will be good for her as she might make some friends and get out a bit. DH is staying behind and will have sole charge which will be interesting! (I had a bit of a moan at him yesterday about it all). After that we are all going away together for a week so DH will get a chance to see how she is with the children. We said that we would appraise everything after this.
Thanks a lot for the support and advice.