Jessa Duggar shared a new photo of sister-in-law Anna Duggar's daughter Tuesday on Instagram. The 23-year-old reality star delighted fans by posting a sleeping picture of 4-month-old Meredith Grace. Anna Duggar and husband Josh Duggar welcomed the infant in July. Anna Duggar herself has been quiet on social media since Josh Duggar admitted in August to being unfaithful. Word of her husband's infidelity came just three months after he confessed to molesting five girls, including sisters Jessa and Jill, as a teenager. Sources recently told "Entertainment Tonight" certain members of the Duggar family have written Josh Duggar to send him their forgiveness. The 27-year-old entered a a long-term treatment center shortly after his cheating admission. Anna Duggar, who shares three other children with Josh Duggar, opened up about her husband's scandals for the first time in a new preview for TLC special "Jill & Jessa: Counting On." The mom-of-four admitted her ordeal has been "heartbreaking." Duggar and her family came to fame on TLC series "19 Kids & Counting," which was canceled in the wake of the molestation scandal. Part one of "Jill & Jessa: Counting On" will air Dec. 13 at 8 p.m. ET, with parts two and three to follow Dec. 20 and 27 at 9 p.m. ET.