I think she sings to however makes her happy
I think some of the lives too is from an overworked voice but that's not to say I don't get what people are saying
But she has seemed to make an effort improving her voice for a few years now
She actually made big improvements since her old vocalist left (think it was PECO) not saying that had anything to do with it but her live vocals did improve since then lol. She also seems to sing better too when shes well rested