Will she get to keep the ring after all this is over? It's the least she should get. Unless, of course, it's a loaner, like they have for the awards ceremonies.
I can see it now. Their engagement ends b/c she realizes it all just happened so fast, she got caught up in the excitement of it all, and she was in love with the idea of Tom Cruise being in love w/ her, etc. Perhaps their engagement won't end immediately, they'll take a break first.
Or perhaps they'll admit it's all a sham.
I won't hold my breath.
It seems that engagement is the new thing to do in Hollywood.