Probably not notice that I am now a girl, wonder why I'm in a strange bed. I'd get up, wearing nothing but underwear (just the bottom piece) and walk into the kitchen wondering what's going on, still not noticing that I'm a girl. Then her parents come out, and I would wonder why they're staring at me, as I am still trying to figure out why I'm in a different house. They would ask me why I'm not wearing a shirt, and I would look down at my chest, confused as to why I now have breasts. At this point, I would run to the room I came from and scream. I would pick up her phone to see where I am and notice it is her. I would then scream for about twenty minutes. This is the realistic response for what I would do.