Was it in a garage or outside? Did it have an alarm or GPS or any type of locks on it? Does she have insurance?

Good luck recovering it. I would normally say don't get your hopes up, but a lot of stolen bikes have been getting recovered lately, so either the theives are getting dumber or the cops are getting smarter (or actually trying for once). Hopefully this will be another happy ending with theives in prison (or dead) and bike returned.