Sometimes, if someone won't take "no" for an answer, they need to be told the whole truth - or MOST of the truth - about why. This is what Sydney should have gone and said to Lia as soon as she found out about Jill's picture being in that magazine - yes, it's revealing a risky truth, but she can't make things much worse at that point, can she? Maybe she might even listen…
Lia, I need to talk to you about Jill and this picture of her you published, right now, in private. May I?
…
Alright, listen…We've been lying to you. The reason we can't have Jill be photographed isn't because of any religion. Here's the truth: Jill is in Witness Protection, and no one can know she's here. If she's found, she'll be killed - people have already tried, and one even managed to stab her; we were very lucky he was taken away before he could be sure he'd succeeded, and that we had people on hand who were able to save her. Us members of her extended "family" aren't family, we're agents - we were the youngest that could be found for the job, so we can stay close to her and keep her safe.
That's why we can't have her picture anywhere, and why we tried to buy you off with a lie - the fewer people know the truth, the safer she is. Telling anyone puts her life at risk - do you understand me? Do not tell anyone about this, not even the person you trust most in the entire world - all it takes is for that one person to tell one other person, and for that person to tell one other person, and eventually it will get back to people who will try to kill her.
I'm sorry, I really am. Jill wants to model for you, and she loves it - and honestly, I wish she could too. Maybe, once the trial she's needed for is over and she's safe, she'll be able to work for you. For now, you need to back off, and pray that this stunt you pulled with the magazine doesn't get your up-and-coming supermodel killed.