It’s hard to escape a good Skye. However, she has no mobility aside from movement speed, so if one jumps out at you, Flutter straight up and flick down shots on her before she can lock on again. Use Seedling if available.
The educated Strix player knows not to attack you when you're in Counter. The key to getting him is to fight fire with fire and be as stealthy and sneaky as possible; and be ready to react when he inevitably pulls out his sidearm.
Recently, Maeve's Midnight was heavily nerfed - it can be countered by Resilience (at the time of making this) and go down to a minimum duration of around 2 seconds. If the option is available to you, buy Resilience - especially if you're her target.