Really support her, don't be afraid to talk about it and ask her how she's feeling about it, stay on this subreddit (if you're a regular member of reddit), when she's older look into a support group nearby so she can meet other people who stutter, educate family and friends until she's comfortable doing it herself/ask how she wants you to advocate for her, try to give her female stutterer role models to look up to, etc. The female part is really important (to me at least). The majority of stutters I see are males and it's cool for representation but I feel as if, especially in younger kids, being a female is a lot more pressure socially. It may seem stereotypical but at my elementary and middle school, the majority (not all) of girls would sit around talking and the guys would be playing a sport i.e. more opportunity for me to stutter and stick out. It makes my heart happy seeing parents post on here, it means there is hope for us stutterers :,)