Charming! Have you manipulated the tones in post at all? Whether you have or not, they're great.
Critique seems a bit unnecessary but since you've asked.. I think - if I'd noticed - that I'd have asked her to put her phone away and brush the dirt off her knee, but they are details which show her character, I s'pose.
I can't decide whether having the sun in the frame adds atmosphere or distracts. It'd be interesting to see a shot with your daughter standing in front of it.
I can see why you might have wanted to soften the shadows around her face but I really don't think they matter. If you had an assistant than a reflector might have been more manageable than a softbox.