“My daughter’s car’s Timing Belt Broke this morning(she thinks) and we are deciding whether to fix it or get rid of it.”
Timing belts cannot be repaired. You may check to see if it can be recycled.
Problem is valve clearance. If the valves and pistons occupy the same space, but at different times, when the belt breaks, they try to occupy the same space. It is never good.
But some engines are not designed this way. If the belt breaks, it just means you have to tow it in to have the belt replaced. That is the only extra cost.