Nia wouldn't have that video or be on TV at all without Abby. Really, if anyone is sabotaging Nia, it's Holly. Yeah, Holly got this faux video to go along with Nia's faux singing career, which was arranged simply to stir up trouble with Abby, NOT because Nia is actually a good singer, because she's not. In the end, Holly will find out that Nia had her 15 minutes of faux fame, and that's it. Of all the girls, I think only Maddie has a chance of making it long-term in the business. In the meantime, it'd be nice if the mothers would quit being donkey's behinds, and let their kids have fun being a part of Abby's dance company.
Melissa warning those two to stay away means she knows that they're all about: causing trouble. So good for her.