Unfortunately jute and other bast fibers water mark with just about any water or solvent based cleaning product. It has to do with the way the fiber is created when it goes through the "retting" process. I promise, you can't fix it . . . especially after she used Resolve. Sorry! Just walk away or you'll end up buying her a new rug.
If you want to learn more about all types of rugs and how to clean them I have two classes coming up in February and March. www.rugladyseminars.com