Hiding Lelouch's state? I personally find it a little unlikely because the rear mirror clearly shows his reflection. Also, boi was kind of leaning out of the window. Now, if she had hidden him in the back of the truck, that would be different. But I think they must have seen him there. But I guess only future chapters will tell for sure. In the movies I assumed orange and Anya knew because Shirley retrieved his body and Orange kinda took her in. So I'm assuming they were teaming up.
But here Shirley's fate is doubtful, who know who retrieved his body.

Ps. Ooh. Someone is popular.