I agree that the metal repair is the way to go. I also know that hard soldering, even with easy grade of silver solder is not necessarily a beginner’s level skill (or would they have an acetylene air torch). He (or she) could soft solder on the extension. If I were to do that I would file a bevel (in opposite directions, if that makes any visual sense) on both parts, this would allow for a greater area to be soldered, thus a stronger joint. Fitting the beveled areas one to the other would be pretty essential to a strong joint. They could do the soft solder job with your standard propane torch that you can pick up on the cheap from your local DIY center. Although most probably already have one.