I think God has everyone on their own journey. We are blessed with a unique set of strengths and weaknesses and likes and dislikes. Then off we go. Life just does not seem fair. Some get too much more than us, some get too little. We can only control what we can control.
It could be worse. We send 19 year old kids to war. This tennis player has a unique set of strengths and weaknesses and circumstances, just like anyone else. The difference is much of it is extreme. Also highly visible. Not many saw my struggles as a teen and I thank God, LOL. God blessed her with all this talent and she put in the work and God blessed her with all this money. God has built her to handle her situation. Even if God gave me that kind of talent I could not see myself handling the fame. That's ok though, God built her to handle this and me to handle my own struggles. . Its hard for me to comprehend having the money and problems of famous athletes. It is what it is.