After thinking about this matter a little, Weiss came up with an idea. If there was a risk that this man might feel safe after getting away from her, then Weiss just needed to make sure this man could not feel safe even when he was away from her.
As for how she was going to do this, she was going to use poison. Weiss was planning to give Ganz a slow acting poison that she had created and the antidote for it was only known to her.
By using this plan, Weiss would lessen the chance of this man betraying her by a large degree. He also would need to make sure that Weiss was safe all the time as if she died, he would also follow her soon afterwards because of the poison.
After coming up with this plan, Weiss made the man to faint again. She needed to discuss a few things with Karl before starting the plan and she also needed to take this man to somewhere else. She could not just keep him in this back alley.
