All I will say is if her stuttering comes back after some time, don't blame her. It sounds like she's at a fluency intensive and these results are common at the beginning and most clients backslide. And again, it is not because of anything they do or don't do. You can search fluency shaping programs on this subreddit to learn more. My personal take, any SLP that talks or advocates fluency doesn't really get it. Even if they stutter themselves.