Hmmm, rather than a refund, I'd like to suggest that you try to convince her for a compromise, and provide assurance/credibility. From her standpoint, I think that she's aware of the leaks and I believe that she has a bf. She has a steady source of income via the sets that she's selling. So for a compromise, you might want to go down the route of getting just the upper body or lower body. Less pics/vids with her face (but make sure that there's still some, as a confirmation on your part, that it's really her) and lastly, have her check your credibility (if you're a frequent buyer from her). If she gives in, I'd highly suggest to not leal anything and wait for a few months (wherein, your phone might get mysteriously "stolen" or "lost", so there's a plausible deniability on your part).