Most she could do is kick them out of the sorority honestly. And given how there's currently only 5 HOTs that are/were involved in the restaurant...it's not that many anymore.
(ONLY HOT SISTERS, NOT DAUGHTERS)
HOTs not involved: Sage, Elena, Heather, Lily, Ashley, Josy, Maya, Arieth
HOTs involved: Quinn, Riona, Camilla, Sarah, Melanie.
5/13 is still big enough to be a scandal, but now it's not as bad as it used to be
Pre-Episode 6:
Involved: Quinn, Riona, Sarah, Melanie
Not Involved: Sage, Elena, Heather, Arieth
The numbers were equal back then. Now they're heavily outnumbered. So if ALL five of them were kicked out of the sorority due to the restaurant business, you still have eight girls at the sorority and the sorority isn't as heavily damaged as it would've been if it all came out in season 1 or at least pre-episode 6 (or even more so: episode 10)