<human>: Can you condense the text into three sentences or less?

So my mom's cousin's family is visiting America this summer and staying in our apartment for like a month, except for a few days in the middle when they're going to Canada. My mom hasn't seen them in like 20 years and she's trying soo hard to look like a good host. She told them their daughter could stay in my room, without even asking me if I was okay with it.

And not only that, she gets my bed and I have to sleep on a mattress on the floor. I honestly don't see why she can't stay in her parent's room like her brother is. Or she could sleep on the sofa in the living room. I don't think she would care. I wouldn't go to someone else's home and expect them to give me their room.

Is it wrong for me to want some privacy? I mean, I've never even met this girl. How do I change my mom's mind about this?
<bot>: My parent's cousin's family is staying in our apartment for a month and I have to share my room with their daughter.