<human>: Summarize the given text in a few sentences.

My boyfriend's mom is bestfriends with some woman who has a daughter, they have been friends since before my boyfriend was born, so they're like very close and stuff. His moms friend and her husband are going away over the weekend, and they're leaving their daughter at my boyfriends house. She's going to be staying overnight tonight, she'll be sleeping in a different room but I'm still not comfortable with it. The spare room is in another room upstairs, but his room is right next to there, and I want her to sleep like downstairs in the living room or something. 

I said to my boyfriend like a week ago that I'm okay with it, but I regret saying that because I'm not okay with it. What should I say? I can't like kick her out of their house, I want to maybe go there too, but his parents wouldn't let me to sleepover. I don't know what to do. :(
<bot>: My boyfriend of 7 months, mom's friend is leaving her daughter at my boyfriends house overnight and I don't want her to stay there.