The Brown family is reflecting on how they’ve failed each other following the demise of their plural marriage.
In a teaser shared exclusively with PEOPLE ahead of Sunday’sSister Wives: Look Backspecial, the family reacts to their happier days as a plural family while watching their 2013 commitment celebration.

TLC
After Christine says she has to “decided every day, am I going to be a good sister wife today or a bad sister wife today,” the video concludes andMeri Brownadmits she’s “so mad at us, every single one of us.”
“We failed ourselves,” she adds with a wistful smirk.
Despite their shortcomings and Christine’s decision toleave plural marriage behind, the mom of six explains that she “decided” to keep it sacred and calls their commitment ceremony “one of those days that was special.”
Meri continues, “What is it that they say, your mission should you choose to accept it? We didn’t choose to accept it. It’s heartbreaking to me.”
“It looks a little different,” she said of the family’s current dynamics. “I sure hope it’s possible, but I can’t have expectations. I can’t put expectations on people, I’m realizing more and more, as far as family and that connection and spending time together and stuff and operating kind of a family. So I hope and I pray that it’s possible, but that will be that a situation where everybody has to choose that. So I don’t know.”
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
Sister Wives: Look Backairs on Sunday at 10 p.m. ET on TLC.
source: people.com