When Vance had said the weapons could kill him, Melva took it as the weapons were lethal to werewolves. They were a kind of supernatural creature that had unbelievable strength, heightened senses, and also the ability to regenerate. There must not be a lot of things that were capable of harming them. She was unable to comprehend why he would do something such as creating weapons to kill werewolves when he himself was also a werewolf.
What was he going to do with such weapons? Why would he even think of killing his own kind? And furthermore, why would he let her have them? Was it to show her that he trusted her that much? Or to keep her on a leash? Because as long as they had the contract, she would not dare to harm him, or she would risk the safety of Ichorhold. And she was smart enough not to try that.
