Sylvia was ready to fire her Sun Bolt at the same time Buddy would strike, but the paralyzing fear of the ghostly figure of Kath held her. Thankfully, it turned out okay as Pylia gave the ghost the medicine and it seemed to pacify the ghost, sending her to, presumably, an afterlife. After Buddy made his comment, she added with a nod, "That was too close..." She then turned her attention to Pylia as picked up the handkerchief with the name, Katherine on it. When Pylia started speaking, and mentioned that she was glad that Buddy was with her, Sylvia started to feel relieved that she asked Buddy to follow her. 

She listened as Pylia continued to tell the tragic story of Katherine and her family and how they succumbed to a plague. What she was surprised to hear was that Pylia was asking Buddy to not tell her about this. Sylvia was stunned for a moment. But judging from the whole necromancer thing...this wasn't surprising either. She answered Buddy after remembering her and Pylia's discussion about telling Buddy and Shortfang about her origins for a moment, "...Then don't make a false promise. We should be honest with each other," She then looked to Buddy and she told him, "I think you should let her know about my presence here,"