It's Gravity by Magz. She took it down (means the sites it was one mostly are gone, she left the fandom, her own site expired, she changed LJs) but you still can find it.
Gravity by MagzAs one of the leading physical therapists in the country, Buffy Summers gets to work with some of the most famous athletes in professional sports. She's never contem-plated turning anyone down - until her little sister pleads with her to work on William Broad [hehe... notice the Billy Idol reference] - the world's most famous rock climber, a man that she's disliked since their first meeting five years ago. Unfortunately for Buffy, her sister is very good at persuasive tactics, and the blonde soon finds herself shipped off to California with all her belongings, prepared to move into William's lush mansion to give him all the therapy he needs to get back on his feet. Based on the novel Adam's Fall by Sandra Brown.
For the other, if you don't get an answer here, go to LJ:
http://community.livejournal.com/find_buffy_recs/profilehttp://community.livejournal.com/spuffyficrecs/profile