Yet another question about 'yet'

[aleCcowaN]

I've just heard Antiques Roadshow's expert Geoffrey Munn describing an piece of jewellery in a positive way but describing the revolting contents such pieces used to have inside in the past, and while doing this he said to the owner "Are you worried yet?".

My question is about that "yet" and how in may modify somehow the tense. I mean, does that "yet" imply that the worry is 100% there ("¿Ya está preocupada?") or does it rather indicate that it's an incipient process ("¿Ya se está preocupando?")?