This is a great story. I think you're right to hope/wonder about what God wants for you after having kept you around .
Why so secretive? God performs a miracle, saves someone's life, and then they're left to wonder "why me"? And just like the prayer thing, this person, a believer, will from that point on constantly be trigger-happy in attributing the next good thing (or number of good things) that happen to them in their lives to the "why" part of why me. If you're trained/taught (by being told "God has a plan for you, that's why you're alive") to believe that there's a reason that you lived, beyond the hard work, and implementation of the skills of the medical team that saved you, without any structured guidelines as to what qualifies as the answer to the "why me?" question, then, literally, ANYTHING positive can be attributed to "God's plan".
It's as if people that don't go through such traumatic life/death scenarios, but still experience these same, supposedly affirmative life events that the person who survived experiences are getting the exact same treatment. How can you then, logically, attribute these experiences (such as the birth of a child, or any number of other reasons) to the "why" part of "why me" ?