>>69695654a little bit of all of the above.
The bosses are kinda bloated, and she's playing sub-optimally (both on an individual character skill gameplay level, and on a team-comp level being picked more for looks than actual efficiency).
But it's not the end of the world. The story mode bosses aren't too hard, you can beat them even with sub-optimal play if you just buttonmash your way through them long and hard enough, it just takes a bit longer / more tries than normal. It's only the endgame/postgame content where the actual hardcore autismo grind / skill level is needed.
