My boyfriend had a major surgery. In the beginning of his recovery when I worked his daughter who is 14 would stay in our room on the nights I work. I didn't feel he should be a lone at night while I work. Weeks later I find out she is still staying in our room while I work. I'm not suggesting anything inappropriate is occurring. However, she has went through our dressers, closets, ipads and phones without permission. I have found she has stolen some of my undergarments. Tonight I asked him not to allow her in our room while I work. I feel she invades my personal space. I just don't feel she needs to be there all night. I found out she stayed anyway while I was at work. I'm so mad he didn't respect my request. I don't know what to think or even how to handle this situation. What do you all think/suggest?