"Which First Baptist Was That Again"

From a random blog:

I am asking for your prayers for a precious friend that has just been diagnosed with breast cancer. Her name is Krista and she is the wife of our Youth Pastor at First Baptist.

Q: If God is omniscient, why do we need to need to use names?
Q: Would it really clear things up that much for a non-omniscient God to add her church and marital status?

Prayer is confusing to me. More on that after some research.