First look at 'Jill and Jessa: Counting On': Anna Duggar recalls shock of finding out husband's infidelity

Anna Duggar joins 'Jill and Jessa: Counting On' spin-off series. (Screenshot/TLC)

Anna Duggar, the wife of Josh Duggar from "19 Kids and Counting," is still reportedly struggling with the reality of her husband's infidelity, and this is something that she will try to come to terms with in the family's new show "Jill and Jessa: Counting On."

"I don't know what I'm stepping into," Anna, 27, said in a clip shared by the TLC network.

Josh has just finished his stint at the faith-based Reformers Unanimous rehab facility in Illinois. But for nearly six months after the news of his infidelity broke out, Anna was left caring for their four kids—Mackynzie, Michael, Marcus, and Meredith Grace—alone.

Even though Anna exhibited grace and fortitude amidst that difficult time, the mother of four confessed that there were times when she felt at a loss and didn't know what to do.

"I don't know how to handle each situation," Anna said. "It's not anything I ever would have thought I would walk through. [I tell myself,] 'Just do the next right thing, have the next right response for the next 15 minutes.'"

Earlier, Anna said in a statement that she is very touched by the outpouring of love and support she has received from friends, family, and even complete strangers.

"Many have asked how I am doing. So many have asked that its actually humbling and touching. 2015 was the most difficult year of my life. Yet, amazingly I've found that in my own life crisis God has drawn near to me and my faith has been more precious to me than ever before," she said.

She added that she visited Josh in rehab, and she considers their union "an important step on a long difficult road." Despite the fact that people have been urging her to divorce Josh, Anna did not do so and remains committed to saving their marriage.

"I trust that God will continue to show His love and tenderness toward us and bring beauty from ashes—somehow—as only He can do. Please continue to pray for me, Josh and our children," she said.

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