Isaac smiled to himself as he watched Silk skulk about before heading inside into a place that even he would not be able to easily follow. The door was guarded by magic and not the cheap hedge wizard type, the kind that commanded considerable gold and required considerable talent. He didn't like magic and knew well enough the kind of spell cast on that door. He would have nothing to do with such filthy arcane powers. Of course had the mood taken him she would have never even made it this far. He could have dragged her into any number of dark alleyways and had his fun with her, braking her piece by piece until she begged, begged him to kill her. But alas that part of the game would have to wait, else his employer might take offence. After all he was not simply being paid to hurt dear little Silk but to prolong that hurt. 

Besides before Isaac could have his fun his employer would want to have his. Isaac understood his employer’s needs and he was nothing if not a consummate professional. With that said Silk had made the game a little more interesting. Not only did she not flee the city as predicted she might but she had allied herself with some honest looking men of obvious calibre. For protection no doubt. Silk was averse, like many of her kind to honest labour and so he surmised that this course of action would be purely practical in nature. Surprising but by no needs unanticipated. It would affect his next move but not considerably so. Plus his employer made no demands on Silk associates so Isaac would have a completely free hand in how he dealt with them.