She masturbates in front of her mother.

Downstairs her mother was cooking eggs. Sarah Sat at the counter and began fingering herself through her sweat pants.

"Good morning, Sarah!" Her mother said cheerfully, oblivious to what her daughter was doing.

"Hi Mom." Sarah replied as she pushed her finger into herself through the pants.

"So did you see the letter from that Amherst college?" her mother asked.

"Oh ya, I need to look at that, just a little preoccupied." Sarah said.

"Okay honey. I just thought you would be exited about it."