Rehearsal Room

I'm with a childhood friend in a tiny room: 6 feet wide and 10 feet long, but the ceiling is nearly 20 feet high. Except for a couple of small windows near the ceiling, all the walls are mounted with glossy whiteboard. There are splotches of bright red paint everywhere.
My friend is sitting at a narrow white desk that spans the length of the left wall. She's staring at the wall and talking loudly, as if she is rehearsing her lines for something - I suspect maybe she has a Youtube account geared towards children.
I look around, impressed, and ask if she made this room herself. She says yes.