Derik had acted very swiftly, and it didn't even take him a second to throw the other person into the line of fire. He knew that Hannah wouldn't be on his side or agree to do something like this, so he had acted on his own.
If she had come moments later, then perhaps Hannah would have attacked Derik to stop all of this. However, there was one thing that the red vampires had in common, and that was a hatred for the dhampirs who had killed many of their close friends, family and allies.
Without a doubt, in their eyes, the dhampirs were enemy number one, which was why after seeing the yellow glow in Jessica's eye, Hannah had already made up her mind with whose side she would be on.
Taking out a small short sword, Hannah thrusted it forward, and in doing so, a red line of aura shot out similar to the blood bullet. It wasn't as fast, nor would it be as strong, but there was no drawback to using a blood skill like this through the weapon.