a suggestion if pachi reads deez:
when she is asleep and the player is touching her, make it so there's a chance that she will almost wake up (? sign), and if the player keeps going she will wake up (!! sign). chances that she will wake up will increase depending on how fast the player is fingering/fucking her. this system is like when touching her during the go outside scene. when she wakes up and found out that she is being fucked, there will be a dialogue like the pedestrian scene. depending on the desire meter, her mental/happines will decrease.