This morning we had a follow up with an orthopedist about Emma's wrist.
He pushed around on it a bunch. Shook her wrist all around. Made her do a couple push ups. His conclusion... she's fine. Probably just bruised her wrist when she fell. He said we have no reason to worry about her growth plate. She is cleared to resume all summer activities and if it is still sore in a month we can come back if we're worried about it, otherwise no splint or cast or sling needed. Hooray!