Just how central a role do in-laws play in some women’s decisions to stay or go? For 27-year-old Nancy from Ontario, Canada, it couldn’t be simpler. “I considered leaving both of my husbands because of their mothers, quite frankly,” she said.

Indeed, a nasty in-law can be a catalyst for departure. “My current husband is a dream, but if his mother opens her mouth one more time I swear I will walk out until she is dead, and then return after the funeral like it was all an unpleasant dream,” she says.

“I wish I was joking.”

To give up on Mr. Right because of his mother would be a tragedy. On the other hand, three husbands whose mothers drive her crazy? That’s at least bad luck.

Tracy, a 34-year-old Midwesterner, suspects that a man who can’t keep his mother at bay — and out of the most important moments in their lives — might not be worth the trouble.

Her doubts about her husband started just before the birth of their first child.

“There was no way in God’s green Earth that I was going to allow his mom into the delivery room. He assured me he would tell her.”

But he didn’t, and his mother, who had made the long-distance trip just for the occasion, had other ideas.

“You’re going to have to let go of that modesty,” her mother-in-law harped early in Tracy’s labor.

In the end, Tracy had a nurse announce that all guests must leave the room.

Situation resolved.

“But now his mother reminds me of the abrupt realization I had that my husband wasn’t going to stand up for me,” she says, “even when it was incredibly important.”

The feelings about her mother-in-law persisted, and Tracy and her husband are pursuing marriage counseling to help them work through everything.

Last, Part III – Inlaws and Keeping a Marriage Together