This explanation did make a lot of sense to Weiss. Even though she had no way to verify if Mathius was telling the truth or not, Weiss's intuition and judgment told her that he was most probably not lying.
His lying was separate from if his information was true or not. So there was possibility that Mathius himself was not awere of the truth, but that was not really something that Weiss needed to worry about.
So she calmed down and stopped thinking about different things. Instead she started asking Mathius various relevant questions regarding the Magus world.
Maybe because Weiss had already paid him a lot of money or maybe because he was in a good mood, this time Mathius started to answer everything without asking for any extra money.
As her funds were starting to run low, Weiss was actually happy about this matter. Or she would need to start taking out the medicines made from the materials of the Earth Overturning Great monster. That was something Weiss wanted to avoid.
...
