You do nothing

You decide to let the action before you continue, less concerned with Sarah's welfare than you are in the possibility of some lezzie schoolgirl antics occurring right in your very own living room. Your hand begins to slide back up and down your invigorated cock as you hear Sarah's soft voice.

"Please, Frannie! Isn't there something else I could do for you? I've never..never.."

You see Sarah meekly glance below their waists.

"Say, it, Sarah!" Frannie hisses in the girl's face, mere inches before her own features.

Sarah drops her chin. "I've never eaten a girl's pussy."

"First time for everything, sweetie!" sneers Frannie. "Open my jeans."

You watch Sarah dejectedly drop her hands to the girl's buttonfly after Frannie releases her wrists from her deathgrip.

Your hand works faster as it looks as if your sweet babysitter will comply.