Yes she did. I went to a workshop she gave back in 2009 here in Rotterdam, Holland. At the end there was room for questions and off course I have asked here about MJ and his future tour plans, etc.
She talked bad about him. As a Michael Jackson fan, I think she belongs to the group of people who used him for their own gains. Of course, there are a lot people who are only motivated by money, but in this case MJ was responsible for her succes. In my opinion respect is well placed in this kind of situation.
She bashed him, and she also said that she wasn't there to talk about Michael Jackson. She was there talk about her guitar skills and her passion for video editing (she makes boring pieces by the way).
Again, my opinion.