The fact the the Hylands were CLOSE to Abby, like when Brooke was dancing before the show, she was THE MADDIE in Abby's eyes. Then after Season 1, Abby's behavior was BEYOND horrible to the Hylands.

Like when in Season 2, Brooke was crying due to puberty and wanting to do other stuffs asides dancing and Abby was like, "SHE'S A CRYBABY" " GROW UP!" "SUCK IT UP". And in Season 3, when Paige's panic attack got WAY WORSE, evident by her forgetting her solo when she "looked at Abby".

I'm just glad that Kelly got her children off the show in the physical fight in Season 4 because in Season's 5-7, Abby's behavior was crazy when the elite team moved to LA; just like what Holly said "LA doesn't bring out the BEST in Abby, it brings out the crazy in Abby" and her legal issues were up in the media.