First time watcher - confused about something in season four

Okay, so Olivia has been kidnapped. I just finished episode 10 where she finds out she’s been held in an elaborate production studio of some sort. I started episode 11 and Elizabeth and the VP are arguing that they’re the only ones left now that their two other cohorts are dead.

What I’m confused about is the link to Olivia’s friend from Law school and the involvement of her daughter and the daughter’s friend trying to protect the folder of photos of Olivia from being stolen. Why would they care - especially enough to die over it? Will their connection/motive be revealed later? Was it already explained and I missed it? The show can sometimes be overwhelming with its plot weaving and details to keep track of, so I just want to make sure this wasn’t a thread left dangling or I just haven’t been paying attention enough.