Mackenzie says she hasn't spoken to her One Day at a Time co-stars, including her friend Valerie Bertinelli , since her arrest. "I imagine they felt like they were being put in a ridiculously familiar and incredibly uncomfortable position once again by me," she says. "I've written letters to the effect of, 'I'm so sorry to put you in this position again.' I felt horrible."

What Mackenzie doesn't know is Valerie flew to Chicago to surprise and support her during this difficult time. "Oh, Val, I'm so happy you're here," Mackenzie says. "I can't thank you enough. You cannot imagine what this means to me."

Valerie says she had no idea what her friend of 30 years had been through. "I feel regret that I wasn't there for you as much as I could have been. I was so wrapped up in my own life," she says. "So I wasn't paying attention to [Mackenzie], my sister."


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