lauralee68 I'm so sorry to hear about your Son, he was so young. My heart really goes out to you, I can't begin to imagine the devastation it caused you.
I would like you and everyone to know my son had this happen to him when he was 7 months he just turned 2 they told me he was fully recoverd and just passed away on the 31st of March he again had a virus attack his heart. I hope this will never happen to anyone else He was a happy sweet boy.
The short answer is yes, but it depends on a lot of things, like what caused it. I'm assuming a virus since you mentioned myocarditis. The chances are really really slim. Being that she sees a cardiologist and you now know what to look for, I wouldn't stress too much.
I'm glad to hear of her full recovery, that is awesome :)