I don't know.
I don't think it's a smart move. I think she should wait while the hatred dies down a bit (I'd say she gets some vocal training and then returns in a few years when people have forgotten her.)
I just don't want her to be abused again. She's just a kid. She doesn't deserve what people throw at her. And even if her new single is crazy good, people will still find something to make fun of. That's just the way society is.
