I can't get the last star in "Surprise," though many days of game time have passed and I've spoken with Chloe and Emily many times. I know
ThL speculated this was a bug for someone else; was that ever resolved? There are other events that can't be unlocked without that star.
You must do it in the proper order.
Surprise
Prerequisites: None
Characters: Chloe, Susan, Emily
Description: Somebody should learn how to properly lock a door...
Guide:
★ Have fun with Chloe and pick the bondage option.
★ After someone comes wait a few days for Chloe to think things over.
★ Bondage fun again and let Chloe to worry about the door.
★ Face the consequences of your actions.
At the end of this event, to complete it, you need to have the following main dialogs: Emily (1), after a few rebuffs from
Emily
then Chloe (1), Emily (2), Chloe (2), Emily (3). They are sequential and will either "pop up" or appear as dialog
option.