Imagine how bad Noel was at her lowest point in her own series. ...Now imagine its worse.
Somehow arguably less useful than P7 who has similar tiles, and her skill is kind of awful. She's a perfect storm of not being particularly good at any 1 thing while also not being really acceptable at any of them. Also she jumps forward during her skill.
This can have unexpectedly bad effects on enemy positioning sometimes, including units... uh.. simply walking past her, to the map edge, which makes you lose. There are arguably some scenarios where she's useful, but those are... niche to the extreme and honestly if you're one of the people who CAN pull those off, you dont need me to explain anything to you.