They went through so many ups and downs together, but they fought a lot, and they got violent often," Twain revealed on Thursday's episode of NPR's Wild Card with Rachel Martin. Still, Twain said it was her parents, Sharon and Jerry Twain, who "hurt each other the most." Twain's mother, Sharon Edwards, divorced her biological father, Clarence Edwards, when the future country music icon was two. The couple ended up remaining together until they were both killed in a car accident in 1987 when Twain was 22. It's not the first time the country singer has spoken publicly about her turbulent upbringing.