Hey a dumb and clever suggestion:
Make dildos buyable. Hear me out, now is funny that female spirits have dildos on perch but about the female player feels off to me for some reason. Now you could still do same mating scene but without the dildo, instead you have tongue and cunt option, the tongue is for licking and kisses of course, and the cunt is for them to lick it and you rub it all over them. Two options and dildo in backpack. ;/