if you mate her with another villager, her running trait won't necessarily pass on to her child. only their skills pass on to offspring (farming, building, researching, etc.). that doesn't mean you won't get lucky and have another runner, but don't expect it to happen just because she's a runner.
runners are the best, aren't they? i had two in one of my games, but one of them died. the other one is still kicking, though!
btw, villagers can live much longer than 60 if you have a higher level of medicine.