She’s lucky to have a dad this aware and cares this much. You’re doing just fine. Always empower her to speak when she wants and be patient if she has blocks and is struggling. Never stop telling her she can do whatever she wants in life and make friends with whoever. This is a massive thing that many stutterers struggle with internally. There’s going to be some tough times growing up—kids can be frickin assholes. But make sure to push her to be active and be social. Team sports, clubs, etc. those are where she will make lifelong friends and grow into being comfortable talking around people. Sending good vibes your way!!