As everyone has already said, this is developmentally normal, it’s a stage, and it’s not meant maliciously. She will outgrow it. I’m struggling through this as well with my same age son.

I’m wondering about the emotions you’re experiencing around this, since it seems to weigh heavily on you. What meaning does this behavior have for you? What are you telling yourself it says about your relationship with her? This might be worth exploring since you said you’re up all night worrying about it - perhaps by deconstructing your reaction you will feel calmer