"I can hear you"

As with most sibling who share a room, there is often a fair bit of arguing at bedtime between the girls. Or crazy fun.
A perpetual issue is Grace wants to stay up and read/draw/sing, while Aubree wants to go to sleep. And so wants it dark, and quiet.
There was some arguing, Grace in the closet had been singing, and Aubree wanted to sleep;
 Aubree complained "I can hear you!"
RD, in the hall, told her "she's not singing"
Aubree retorted "She's singing in her head!"