I think my stuttering got a lot worse nearer to her age as puberty started kicking in. To this day, when I'm PMSing, my fluency goes way down. The hormonal stress really doesn't leave much room in my brain for me to speak well. The way I learned to cope (there just isn't a cure), is to read out loud to myself and record it. Hearing myself helped me anticipate my trouble spots and explore language in those moments (for me, hard consonant sounds, R's, T's, J's, Gs, B's). Even if I couldn't hear an improvement as I practiced, I became more confident. Also, maybe get her to join drama club. If she can be fluent in different accents or in role play (for me, it was telling jokes), she may gain more confidence which, in my experience, makes fluency get much better. I still struggle on phone calls and sometimes face to face, but I OWN it. If anyone asks, yep, I have a stutter. People were surprisingly understanding in school. Did I get made fun of? Sure. But if my parents asked me at her age if it bothered me, I probably would have said no, too. Kids can be surprisingly realistic. This is her situation - it's all she knows. And if she has friends and is doing well in school, I'd say just encourage her to to the things she loves.