She sounds like she is healthy and what she is eating a lot of isn't junk or excessive carbs or sugar so I would say let her eat ! Lol
I was going to add that I have started doing snack as a veggie and carb , not dairy or fruit . I realized sitting and writing out my menu for dayhome that although it was nutritious and interesting it was still too much sugar .
For our 3:00 snack , I have been doing pretzels and grapes ( I know the sodium is a bit high but they get about 6 long pretzels with grapes and cheese , like a kabob .
I'm phasing out morning snack some days as our lunches are a bit more substantial . I'm water only here and we have a drink rule here too 5lm !!!