Hard to answer but will say this.
A miracle is a miracle. Not sure how you can prove a miracle. Only have faith in it.
I have witnessed a lady friend who had two spots on her lungs, and emphasima, and A bunch of people prayed for here. and the two spots disappeared. and the emphasima was no longer there.
Now, call it a miracle. Answer to prayer, or just medical mystery, thats up to you. But you really can not prove anything. You can only take it on faith. no matter what answer you chose.