It's all starting to come together. Frank Mitchell's death...Stryke's identity...Razor's revenge.
When Stryke pulls a gun on Von Drake and demands to know what she is and why Von Drake cares so much about Razor, Von Drake tells her the truth: Stryke and Razor are sisters. Before Razor can intervene, Von Drake stabs Stryke in the stomach, leaving her out of the fight.
Now, Razor has gotten the chance she has dreamed about for her life: just her and Von Drake, one-on-one.