When Sylvia saw the greatsword, she wondered if that was the same greatsword that the larger trog used. If it was, they could have presented it to the Grey Scales as a piece of evidence after they take care of the trogs, but she didn't say anything. There was probably more items of interest that could help when it was time to talk to the Grey Scales. 

Soon enough, they reached the back alleyway of the marketplace, and Sylvia answered her friends, "I think it's best we head back to the inn for now and rest. We're going to need all of the rest we can get for tomorrow. I could do with a bath myself," She then led the way back to the Silver Stag. As they walked on, she recalled her question to the doll earlier, and decided that she should say something about it to Pylia. 

She made sure she was walking right next to Pylia as she whispered to her friend quietly, "Pylia, when we get back to the Silver Stag, there's something I want to talk to you about,"