Ruby played into the role, going from her praying to biting at her lip just slightly, Her expression entirely contrite, she stepped closer to him again and looked down quickly.
"You could...let me work on some extra credit with you" she told him running a hand along his pants and looking down at the floor, why was he always standing when she offered this, it was unfair really. "I'm a very attentive student and I can work for hours and hours I can work so hard and so long without stopping"
She was close enough that she could caress him lightly under his pants, it wouldn't take her long to get Sam hard for her, not when Ruby knew exactly what it took. "Please...I'll...I'll do anything"
Those had to be the magic words with him, anything was such a promise, such a surrender, she figured he'd approve and go with it.