Normally, Marie would be able to see quite a lot more than anyone else in the car.

At the moment, however, she's sitting in a moving vehicle and most of what she can see is suggesting to her that she doesn't actually want to look any closer.

So whatever insight the material sight is giving her into the half-eaten corpse, she's just going to keep her mouth shut and wait for things to get interesting in a less... gruesome way.

(She might be waiting a while for that one.)