If Maeve finds you by yourself, she WILL go after you, and of you aren't in close proximity of any teammates, she WILL win(assuming she has all her abilities ready). Try staying closer to your teammates or making a system for grouping up.
Try to double jump on top of your of enemy as much as possible. You can land your daggers easily and it is next to impossible for the enemy to aim directly on top of their head.
Lead your shots. If you have a projectile, never shoot at her; even in close range you must shoot ahead of her. If you have a hitscan, wait until you have her in your crosshairs to shoot.
Maeve's mobility in the air is large but predictable. Pounce is her only way to quickly change momentum, so you can always predict the 2 (Or 3) general areas where she is forced to land.