Do what she wants. Wrap your lips around her clit. Suck it and lick it.

You wrap your lips around Sarah's throbbing clit.  You start sucking it gently at first, then harder, drawing it into your mouth.  Her back arches hard, nearly lifting her off the bed.  A deep throaty moan escapes her lips.  You glance up, seeing her clutch her breasts through her black satin bra.  

"Ohhhhh fuck John!! Ohhhh goddd, that's it!! Lick it!! Please!! Ohhh, fuck I'm so close!!"

You flutter your tongue around her clit, licking it.  The tip of your tongue flicks back and forth over her hot, throbbing clit.  Sucking harder, you plunge a couple fingers into her wet pussy, while circling her clit with your tongue.  Her body spasms as her orgasm tears through her.  Her hands clutch the sheets and, hips bucking, she grinds her pussy against your mouth.  A deep, low scream echoes in the room as her pussy floods your mouth.

"Oh god... ohgod... ohgodohgodohgod... John!!! OHHHHHHHH FUCKKKKK YESSSSSSSSS!! Oohhhhhh!"

Her orgasm slowly winds down and she collapses onto the bed.  You hear her breathing heavy, an occasional moan coming from her.  Little tremors run through her sweat soaked body.  Sarah seems lost in her little world of afterglow.  You lick her sweet pussyjuices from your lips and your cock throbs, demanding your attention.