Complex sentence: Windmark gains the upper hand, but Olivia, under emotional duress of fighting for her daughter Etta, has her latent Cortexiphan powers trigger that draws power from the surrounding city ("Ability"), and psychokinetically smashes Windmark between two cars.
Split into simpler sentences: Windmark gains the upper hand, but Olivia, under emotional duress of fighting for her daughter Etta, has her latent Cortexiphan powers. They trigger, and draw power from the surrounding city ("Ability"), and Olivia psychokinetically smashes Windmark between two cars.