Actually I am of no faith having abandoned the faith I was born into. And Buddhism, to me, is an outlook, a philosophy, an approach to living with ourself and with others. Buddha was a man, claiming to be nothing else.
Learning and growing are indeed key principles. You said previously, "God adores you." Could be. But why should he adore me and be so indifferent to millions others? We need not go there, but no doubt we can find plenty to agree on and maybe Mairi will be less fearful.
I see everyone, every person as having faith whether they see that or not. The atheist has faith from a very disadvantaged and limited view point that there is no God. They have no proof either way. There is some solid science that shows much order in our universe...shows that current theories of Creation must break certain laws of science in order to be true. That is faith. Same can be said of the Christian, the Muslim, and the Jew. They have to deal with questions many propose...why do good people suffer, where is God, why doesn't He show himself etc and so on. What I have found is most people take the stance that most meets their need. Many atheists were turned off by traditional religion, and IMO rightfully so. They were told abusive things such as you need to earn love from God. If you don't love God you will burn in hell for eternity etc and so on. But, I have found few ask themselves what if God does indeed exist...and religion is a failed attempt at understanding our Creator.
For the record, I have no need for others to see these things as I do. I am not dogmatic to the point I am unwilling to learn...and grow. I have no need to "convert" you or anyone else. I do however try to meet needs. When I see someone struggling within religious bondage, I try to help because I speak their language.
As for your questions about why would God love her and not others...this isn't really the format for this kind of discussion. With that said, I will say this...you, myself and all others have a very limited vantage point. None of us know for sure what happens after death. I can think of 100 scenarios where pain and suffering would make sense depending on what happens in the afterlife. We assume that because we suffer that God is not good, or that he doesn't exist. It's a failed starting point. We place no personal responsibility upon ourselves for the mess we are in...and assume that God should clean up after us. But, what if that is the purpose of this all...to experience love and loss...good and evil along with the consequences within those choices...healing and hatred...and from that gain spiritual understanding and training for another step after this one. Would suffering make sense in this scenario? To me it would. To others it may not. But, no matter our understanding...it doesn't prove or disprove...it's faith.