192509.
I love Yuri Lowenthal. But as far as Luke as a character, I didn't like him. He went from some brat to some whiny pessimistic teenager of sorts in the game, and while he did have his moments of awesome, his moments with Tear just... augh.
You probably can't because you haven't played the actual game. Her Fonic Hymns is what makes her a healer, definitely. I don't really like her as a character either, though; she was mainly in my party for healing purposes, though there was times when I used Natalia instead (who can also heal, but only one person at a time).