Hello,
Welcome to the forum. EFT is an ideal tool for helping your daughter to remain calm and also approach the deeper feelings that are evident and hidden
Sometimes within an EFT session, tapping can bring emotions to the surface - when you hitting the triggers. This usually will happen when approaching the deeper levels and perhaps if this is happening then you may consider the help of an experienced and qualified children's EFT practitioner. That said in my years of experienced I have never encounted big physical outbursts in session.
Outside of session time, our minds are reprocessing and reframing our perspectives on areas we have tapped for. Changes happening here are almost without exception positive and safe. My guess would be is that there is more to do, with a careful and measured approach.
I would still encourage you to involve your daughter to tap, as a relaxation tool. It's a shame if you are finding your daughter reluctant to do eft. Ideally for eft to be really effective then they need to be open to the possibility for positive change and in a reasonably calm starting point.
Perhaps you may view previous post on introducing eft to the whole family and perhaps take the focus off her temporarily.
Let me know what you think. I may be able to help further.
Best Wishes
Christine