First off, ya gotta remember, we fought Madame X herself- not her mons, but straight up she herself. That's kinda broken.
"Plus you gotta admit, Madam X falling down a trap door was pretty hilarious"- that was kinda funny but, once again, it was Melanie that placed the trap and lured her, so I'm willing to "forgive" her for that.
Melanie also said that Melia used her powers in a way she didn't think about, and admitted her lose after that, which is interesting.