How did Andrea's sister betray her?

Andrea Dunlop detailed an incident where her sister's actions could be seen as betrayal. Her sister faked a pregnancy, presenting an ultrasound picture that she obtained from her workplace at an OBGYN office. This act misled her family and caused significant emotional turmoil. Andrea struggled with feelings of betrayal due to her sister’s deception and noted the difficulty in reconciling her memories of the situation 1.