She honestly is high tier but it is due entirely to a handful of moves that either break the system, or bend it to its breaking point. If those moves were "fixed" so that they actually obeyed the system mechanics would probably be around mid tier.
Lmao rikuto, and i know she's short ranged but her tools are so good tho (Sometimes) and also I can't think of a character Marie Rose would have a Hard time against, Like a 6-4 (Insert Character's) favor