I've four suggestions and am reporting one bug:
1.) How about letting defeat sex be a way to gain exp points? A whole minigame on pleasing the monster could be crafted around that...
2.) What if masturbating in front of even higher-level opponents allowed the character a good probability of surrendering to defeat sex immediately, rather than being injured first (a function of outfit and damage dealt, of course)?
3.) Why not be able to befriend the wolves and deer on the island, who would then bring the character food and materials on occasion, or even come to the character's aid if she's being injured?
4.) It would be hot to have a solve for this game in which a ludicrously yielding character could succeed without ever attacking anything herself
Bug: if the character is accidentally masturbating when attacked by wild animals, she loses health but doesn't die