Wow, I'm so sorry that your work got stolen. Honestly. I know the frustration very, very well and I don't think you're wrong at all for wanting her to take it down. Really, I hope she does. No one deserves to get their work stolen when they spend hours and hours on it. My work (from other sites, not here) have been stolen numerous times and my reaction is the same each time. Truly sorry on her behalf but I hope you get an honest apology.