Attacks - She only has one attack and that's when she draws out her claws and prepares to charge in a straight line directly for you, knocking you down if she hits you.
Dangers - On the Chessboard, which is the only place you'll meet her, she will often charge at you causing you to break up a combo you were doing, making it tough to kill any pieces quickly.
Weaknesses - A bright purple beam appears before she charges and she also screams wildly, so it's almost impossible to not know she's coming.
DMD Notes This will be your biggest nightmare on the entire Chessboard. Because you need to do long combos to cause any kind of damage to Devil Triggered chess pieces, the Queen flying past every 3 seconds makes that very, very hard.