That's a wonderful account of God's answer to prayer. I sometimes wonder if He doesn't especially hear and answer a child's prayer. It's what Jesus told His disciples, of course, that we need to have faith like a child, so it shouldn't be any surprise.
Sabrina is learning how to pray out loud in front of others but when it was her turn to pray, she, understandably, said she wasn't sure what to pray. I asked, Do you want Adrianna to live and not die? (because at that time it wasn't clear that she would survive), and she said, Yes, so I urged her, Then pray that. And she did ... boy did she! She went on with original, intense, effectual prayer. Later she told me with wonder that she didn't even know how she prayed like that. I told her it was because Jesus, who loves Adrianna, was showing her what to pray. It is awesome.
And I agree completely about God hearing the prayers of children.