I hated her at first, since she seemed to be just a product of marketing that we were supposed to love. I warmed up on her a bit when she was on SNL. She actually does have a pretty good voice, even if I don't care for her style of music. And I agree that her brother was very irritating (see my earlier comments about the marketing machine).
But now I'm a fan of her as a person. Her career was a casualty of an ugly attack that was way beyond her control (and though her career isn't even a consideration considering that young people died - still.). And her response on behalf of the families was just outstanding. She is classy and big-hearted, and I wish her every success. Ditto to all the artists who joined her during that concert.
I'm till sorta stuck on that licking the donut and screaming, "I hate America." That was only two years ago. I still pretty much think this recent concert was nothing but marketing for her.