The pair were spotted Friday attending a fundraiser event for the conservative family planning organization, Loving Choices, along with other members of the Duggar clan, Entertainment Tonight reported.
"Anna and I go to this fundraiser ever year, a lot of the family does," King said. "We love babies and just love this event. Aunt Michelle was there, Jessa and Ben were there, my mom, Dillon, a lot of the family was there. The event raised over $300,000."
Anna was all smiles in a selfie posted by King on Instagram highlighting the girls' night out. "Any negative comments will be deleted, just try me. She's beautiful!," she wrote.
"I think the picture I posted shows how strong Anna truly is, she's smiling, and has a lot of love around her," King said of the night out. "She was talking to people at the event, having so much fun," she continued. "And she looked so pretty."
Josh admitted to cheating on Anna after it was discovered he had an account on extramarital affair site Ashley Madison back in August. The scandal came just three months after he confessed to molesting five girls including his sisters Jill and Jessa Duggar as a teenager.
In October, Josh wrapped up his second month of rehab as Anna was reportedly doing well and staying strong while caring for the couple's four children. Anna and Josh Duggar have been married since 2008.