Yup, that would be the escape dust...too bad my simmie didn't have that as well when she went through that hall. I had her take the really nice relic, clicked on the stand to bring up inventory list to replace the relic and that part was glitched...all it did was click, no list.
I had to go out of the game without saving.
Next time she's in France, she's going in there with escape dust and get those relics, without the stupid donation.
I loved that part of The Lost Ark.