Our t-girl heroine meets a hot, seductive babe in a bar while on Spring Break and brings her back to her room for a night of passion. She gives the girl fair warning of what might come up during their tryst, but is surprised when she's given the same warning. And...invitation.
Though delighted beyond all measure, she quickly finds there's more to the bargain than she'd ever dreamed.
Also check out some similar keyword tags authors have used: