Kendra Duggar was “so thankful” for her mom’s supportive presence during her daughter Addison’s November 2019 birth.“[She was] telling me I can do it because I didn’t feel like I could,” Duggar, 21, said in Us Weekly‘s exclusive Counting On clip.Before Christina Caldwell‘s arrival, the then-pregnant star and her husband, Joe Duggar, “walked three or four miles in the halls” of the hospital while she experienced “quite a few painful contractions” and “sharp pains.” Kendra recalled, “I was really