We just passed this encounter in session 2 of our game. Shayliss was taken with our shirtless (somewhat misguided) Brawler monk from Tian, Tatra.
After inviting him down to help clean out her rats Tatra, being a good-natured person and adjusting to being a public figure agreed to lend a hand. Tatra has never been one for gossip and remained blissfully unaware of Shayliss' reputation around town. The party Bard saw him go off with her knowing full well of Shayliss' intentions but thinking that Tatra would be pleasantly surprised.
Quite a bit of noise was made as they started to hastily undress which drew Vin to investigate the noises in his basement sooner than expected. Shayliss ducked into a corner but Tatra was left nowhere to hide.
Seeing only Tatra at first he was confused, then he saw his daughter's dress hanging over a barrel and immediately went into a rage.
Tatra showed no fear in the face of Vin, but no concern for Shayliss either.
A good Intimidation check made Vin realize as angry as he was, a fight with Tatra would probably end poorly for him and he allowed Tatra to leave of his on accord, making it very clear that he is not welcome in the shop any longer and expressing his displeasure with the lot of his "hero" friends.
Vin is now upset with the entire party and will charge exorbitant prices for anything that they attempt to purchase.
Shayliss is feeling pretty conflicted at the moment, on one hand Tatra completely spurned her when Vin showed up. On the other Tatra stood up to her father and did not allow himself to be intimidated, showing himself to be at least as strong as her father. Once she has gotten over the sting I think her infatuation will return, stronger than before.