Dear Becky- Has this mother tried a silicone nipple shield? If the baby refuses the sheild, perhaps switching to a silicone bottle nipple for bottle feeds, then trying the sililcone nipple shield again may help. The shield may be a helpful tool to help this baby transition from a rigid, quite defined artificial nipple to her mother's softer natural nipple. -Debi Page Ferrarello, RN, IBCLC