Thanks from OP.
I think the storyboard idea is a good way for her to visualize.
Last night before bed I asked her to think about what she was feeling when she was leaving the park (sad, angry, upset) and what she was feeling leaving the pool (happy, proud) and which made her feel good after a fun activity. Not to downplay feeling different emotions, but she agreed it was nicer to feel happy than to feel sad, and hopefully it clicked a little more that she can control which way she feels when it is time to leave an activity.
Four is rough! But figuring it all out, thanks again for the support, guys.
