She can break out her double-sided dildo or her two favorite toys to get the job down.
Being fucked in the asshole and pussy at the same time is always sure to make girls cum harder than they've cum with just one hole.
Never hold yourself back to just one cock again.
Solo women masturbate with both holes filled and couples bring in a third to load the backdoor.
She can get a cock in each hole or she can get on her knees to get spit roasted and filled with cum from both ends.