1. Sora no Iro, Mizu no Iro. Only 1 episode but it's almost all sex.
2. There's School Days if you want a series of sex (she may get extremely upset watching Makoto go at it with every Goddamn cunt on the show though).
3. Boku no Pico and Chico no Pico would be good if she's into shota stuff .
4. Then there's Bible Black which is porn. Just porn, there's no other way to describe it.
Showing her that one cap of Tsukihime with the mollusks may turn her on. I would show you myself but my /a/ folder just fucked up yesterday.