The basic idea is that there's a woman who lives in a village which pays tribute to a dragon. She wants to stop the dragon, and does so without the use of magic or weapons. They can develop a relationship later if we like. Anyway, the idea is that she learns a great deal about dragon psychology and physiology, and she was already good at bodywork ahead of time, as her job in the village was a masseuse (a massage therapist), so she knows how the body works. Things like pressure points, nerves, etc.

The dragon could take her as a hostage when they fail to pay him money on time, with the understanding that he'd give her back when they pay up. At first, she'd go along with it, even offering to be the sacrifice in the event the village couldn't pay. When that happens, he takes her to his cave. When he falls asleep, she presses down on some of his sensitive spots with her hands and/or feet, weakening him and costing him his ability to use his flame, maybe even temporarily paralyzing him. If he kills her, she can't undo what she did to him, so he can't hurt her. She then effectively takes him as the hostage, and we continue things from there. Something along those lines. 

There can be romance if we want to have it, but we'd both have to be over 18 for that. I'd player the dragon, and the other play would be the damsel. We'd both play side characters. Any takers?