I have had a nice au pair since January, who gets on well with the children. When she first came here, she wanted to go away with us when we went away at weekends, but abruptly one time, she decided that she'd prefer to stay home when we went away, and has done ever since.
We went away without her this weekend and when we got home we noticed that someone had been sick in the family toilet (which she doesn't normally use) and hadn't cleaned it properly. We didn't say anything to her as we weren't sure what to say.
This morning I took the recycling out and found a carrier bag full of bottles in the recycling bin. She doesn't really seem to understand the recycling system here, so I assumed she thought carrier bags could be recycled along with other recycling. I picked up the bag and tipped out the bottles, only to find it was actually her rubbish bin, which contained loads of beer bottles as well as condoms. She has never drank when in the house with us.
When she came downstairs I asked her what had happened and why she had had a man in my house while we were away. If she wants to invite people over, then I think it's polite to ask first, or at the very least, inform me. What she does in her own time is up to her, but what she does in my house is up to me. Her response didn't make sense and she insisted that he did not come in the house. She said that everything they did, happened elsewhere, but she decided to take the rubbish back with her, which is why it is in my bin. She said that there was sick in the toilet because she had been sick after she got back. This has it's led me to wonder how many times she has done this when we have been away. I don't want random people that we don't know (and she barely knows) in my house for a weekend (she said she met him in a WhatsApp group).
I don't know where to go from here, we go visiting people maybe one weekend a month, but now I don't feel comfortable leaving her in my house, but equally I can't insist that she comes with us. Sacking her seems quite extreme because she is good with the kids, but I don't trust her alone in my house any more.