It has a poly V belt that drives essential services like water pump, air con etc, and it has a timing chain I hope it's not that that's caused the failure or it's goodbye engine. unless you are very lucky indeed.
Is there any loss of fluids, oil , coolant?
did you wife see any warning lights on the instrument cluster before the car stopped?
if your not sure where the items are check my site out it may well help.
Albert Rowe, Lofty's homepage.index.html