Oh bah, that's usually an excuse for "She was really hot when I married her so I ignored her craziness, and now I can't live with her." It's the same piece-of-nonsense excuse as women use when their bad-boy hubby turns out to be a wife beater.
Spend some time with her family, see how she treats her father and what her parents' relationship is like. Meet her friends, maybe, and see what her interests are. Women are not all poisonous snakes just waiting to trap some poor guy, have two kids, and never lift a finger again.