In the days before pro wrestler Chris Benoit killed his wife and child and hanged himself, the couple argued over whether he should stay home more to take care of their mentally retarded 7-year-old son, an attorney for the wrestling league said Wednesday.

"I think it's fair to say that the subject of caring for that child was part of what made their relationship complicated and difficult, and it's something they were both constantly struggling with," said Jerry McDevitt, an attorney for WWE. "We do know it was a source of stress and consternation."

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