I found some hints here, and I made Ashley come! She’s the toughest partner I ever had, by the way… :laugh:
http://www.watercoolergames.org/archives/000245.shtml
If you don’t wish to “cheat”, then don’t read the page.
If you want hints, without an explicit solution, I’ll say this much: do things that don’t quite make sense. For example: things that don’t make the arousal meter move can still earn you points. Rub Ashley with her panties still on, and make them wet. Nipple arousal only counts when the bra is still on. Work as quickly as you can — it earns you more points and you can just barely miss the 500 points you need to buy the sleeping pills (fascinating values in this game, eh?). Be ready to use the sleeping pills quickly when Ashley’s arousal meter is in the orange and about to wake up.
Good luck!