Couldn't agree more. Your child is struggling. Have you had a calm conversation about how she feels in these situations and what frustrates her?
My son is 5 and suspected Adhd and with practice he is getting better at being able to articulate the emotion and then can say yes or no to suggestions of why that emotion came about. His big feelings have been more manageable since doing this.
If this was my son at the park with friends I give him a 10minute, 5 minute and then a 'last go' on something like a slide. We then all leave together. If he starts I explain he has two options, either come with me because we are all leaving, or stay crying but I'm walking to the car now and I would like him to come with me. I start walking with e eryone else. He then usually now asks for a hug as we have talked about different ways to support him when he has big feelings. He likes hugs, could be other things like squeezing a stressball, pushing hard against a wall, bluetac. Then once he is calm and we have had a hug we talk it through.
He does get a consequence, but it depends what has happened. Any violence receives a consequence. However if I can see him attempting to use the tactics we have discussed, attempting to communicate, etc, then I praise him for what he did right, talk about what behaviours aren't right and we move on.
I also apologise when I get angry, I'm modelling what he needs.
I suspect I have adhd but as a girl masked it through school. I would have a look at the symptoms. Could be she is simply struggling with emotions and needs coaching and guidance to communicate them.