[ And Roxy is none the wiser until she's trying to sleep. The music isn't deafening from her and Jane's room, but loud enough that it's able to wake up someone who sleeps as heavy as Roxy does.
She rolls out of bed after maybe half an hour of listening to it get steadily louder and louder. She creeps out of the room, careful not to wake Jane, and steps through the hallway. She's just in her PJs, but it's decent enough to go confront a noisy neighbor.
She knocks on the Cal's apartment door and waits. ]