It could be that your grandmother was just asking, "What's the skinny" with you?

Urban Dictionary: what's the skinny

You want to be the other girl in the other bed, you know that, but you are only "trying to get" his attention? Why have you not gotten his attention, talked to him, told him you would enjoy doing something with him sometime?

In that context, if it were my dream, I'd think I was just watching myself (the couple, one of whom is me, is across the room in another bed; I'm just looking across at them, not "being" that other girl though she is clearly me because she has my phone pattern) instead of taking action. The other couple even tries to communicate and talk to me but I ignore them, trying to sleep, trying to be unconscious of my scary desires. After that, I get my grandmother in there poking me hard and asking me, "Hey, what's up with you? Quit trying to sleep and do something".