The main focus was Chapter 3, so there's not a lot. However...
(Here be spoilers)
Jess gets a scene in Mary's new third break event if you win the volleyball and make her your slave, and there's a bonus Poppy scene if you pretend to worship Becky to get her skirt free in her new event while you're Poppy's bitch.
(/spoilers)
The Bad girls / popular girls storyline will be continued in due course, but the good news is that the next several updates are all focussed heavily on Jessica.