Are you "embroidering" as in using a hoop?
Or are you sewing the letters?
The reason I ask... if you are sewing the letters, and it somehow quit in the middle... maybe it would be easier to go back and finish the city's name instead.
*If* you're sewing the city names, I would set your machine up again - starting with the last letter that did stitch out correctly.
If placement is an issue - I would start without the needle threaded and either go incredibly slow or do the handwheel to make sure that you're matching up to that last letter that stitched out OK.
Does that make sense?
If the choice is between stitch or rip... lol... I'll try to stitch every time.