how to determine if timing belt has broken

If the timing belt has broken on this engine, it would likely cause damage as it is an "interference engine" - meaning when out of time, the pistons would impact the valves, such as with a broken timing belt. Simple answer is -- not much you can do 10,000 miles away. It's up to that person to seek professional guidance at a shop nearby -- and if the first answer doesn't make sense, get a second opinion. I'm sorry! Maybe call a shop near them? https://repairpal.com/repair-shops