That is exactly what she says happened. Her sister refused to sleep alone and wanted to sleep with her every night UNTIL she was 17.
I don't care about Lena Dunham at all, her work bores me and has no connection with my life. HOWEVER. The reading comprehension being exhibited in this instance is what truly appalls me.

I distinctly remember being in the 3rd grade and playing "Stripper" with my friends at recess on a piece of playground equipment.

Was her sister awake or asleep? I've definitely masturbated with a partner asleep in the same bed, and with other people asleep in the same room. I think it's pretty normal for someone living with roommates. I agree it's a little weird that she did it with her sister in the bed, but I don't think it's anywhere near…

I hear this is being considered a Class 1 feliney.