My cousins lost their father at about that age, I think the boy was 10 or 11, daughter 8ish. But point is they do pretty good for themselves. They still have some demons, I think it is unavoidable when you loose a parent, especially while young. But they do alright. He is a foreman for a construction company, she happily married stay at home mom.
I think the real damage happens when the parents choose to leave, not made to leave.