Tensions are high in Wendie's home.

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Dr. Oz describes Wendie and Tony's home as a "powder keg." Because she quit smoking and Tony didn't, their relationship is full of tension, which could explode at any time. Wendie says they have been fighting recently, even in front of their 6-year-old daughter, Bailie.

Wendie says one reason for the escalating tension is that she routinely has to watch as Tony and his mother, who recently moved in with them, slip outside to smoke. "They're both smoking, and I'm sitting here trying to not," she says.

Wendie worries this family tension may cause her to reach a breaking point. "My biggest fear is that I'm probably going to have to walk away, and I don't want to do that," she says. "I don't think that's the answer."