Following bread crumbs
After Fex had instructed his direct family members on how to create a soul weapon, Lee Sanguines was unsure what to do with that information for a while.
It certainly was something that could be used to improve the position of their entire family on the council, especially after what had happened. Due to past incidents, the Sanguines family had a reputation of being a bit unreliable, however, Lee didn't care about that.
After considering what to do with it for a long time, he decided that the best course of action was to share this information with the King, or at least with Dwight who could pass it on. This way it would be up to the King what to do with it.
However, there was a problem with this method.
Lee and Silver felt like this wasn't their information to share. Although Fex had allowed them to do so, this was a huge discovery that would forever change the vampires as a race.