>>22615831I dunno the cooldown on it, but that's to be safe. I've had fights with her where she just doesn't do it until way later into her second phase, it's weird. But it's a guaranteed thing. If you're scared of her doing it randomly, just throw a dart at her, keep throwing them over and over. She WILL respond using it from any point in the screen. It's more of an exploit in her dumb AI rather than a full cheese, but if you're sick and tired of her shit then it's a godsend.
To kill her without doing this, just stay at mid-range. NEVER be super close and never use slow attacks.