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Christine Brown Woolley opens up to PEOPLE exclusively about her candid new memoir

"I still felt like there was a huge part that I kept hidden just to be a peacemaker, to make everything work, and everything," she says

Sister Wife: A Memoir of Faith, Family, and Finding Freedom was released on Sept. 2

Christine Brown Woolley is opening up in ways she's never done before.

Fans have seen Christine, 53, and her polygamous family navigate the many highs and lows that come with their arrangement on Sister Wives . The TLC series debuted in September 2010 and will be embarking on its milestone 20th season this fall.

The show kicked off with the family patriarch Kody Brown navigating his marriages to Meri Brown , Janelle Brown and Christine (who was his third wife),

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