When you talk to Dylan after you rescue him from the crash --
How do I rescue Dylan?
-- he says something about seeing Jamila pull things out of her seemingly empty bag. Sounds like a false bottom or a secret compartment to me. We need to get into that bag again.
That shouldn't be too hard; all we have to do is repeat the trick of telling her about something interesting elsewhere, and she'll run off to go look at it. Right?
Well, yes. But unfortunately, it's going to take a very long time for that conversation option to come up again. Frustrating!
In fact, you won't get the option to distract her again until after you've talked to her about everything you found when you finally got to search through Abdullah's trunk.
When you do finally get the option, take it. In her bag, take everything out and flip the false bottom to see what's underneath. And make sure to ask her about what you find there the next time you see her.