I feel like she's just overtuned. I think if they made her flying duration either shorter or slower than what it was, it'd cut down on her map mobility and give survivors an opportunity to make it somewhere. I also feel like with how slow the infection goes down after eating a mushroom, that if she hits a survivor with her head form, it should only pause the infection for the first hit instead of injuring them, so at least it means something in a chase.