My husband started a new job this year where he works night shift at a hospital. He normally comes home when I'm already deeply asleep. This morning he informed me that one of his colleagues was asleep on the sofa. Apparently she couldn't find her house keys and he offered she'd stay with us. I'm not super happy with that because 1) I have never met her, 2) we have small children and I don't feel comfortable having a complete stranger in my house, especially while I'm asleep. AIBU to think she should have tried staying with friends/family or called a locksmith? My husband said she has extremely bad mental health issues and he was concerned for her, which I do empathise with. She's still asleep on our sofa now...