Tiffaney was surprised at the hostility; it had been a while since she had been on the receiving end of any kind of hatred or aggression. No one else noticed, so there wasn't a reason to do anything. Since she hadn't heard herself being introduced as Dyne there had to be some reason for it.
Discussing various things, noble heir didn't have anything to say or understand. Without an understanding there wasn't anything for her to do. Having completed the group separated, the noble followed the lady.
"Worthless whelpling." The girl heard the architect mutter as the two left. Since the lady didn't react, the girl chose to follow her lead and remain silent about it.