is Kids are fragile and don't like criticism. I see it at work with new hires. You have to pull them along slowly or you go through a pile of them before you find a tough one. They can't take the mental abuse I got as a new employee out of college. The latest fad nationwide having their moms come with them to interviews. I crap you not. This was back in 2013 and I doubt it's gotten better.
Look at all the drama they do now to "select" a school with hats and junk in videos they post. My dad would have slapped me in the back of my head and my grandma would have made fun of me for being such a drama queen. You make a decision and tell the person to their face. Put it in writing.