I think there isn't one set answer for this, sadly. How your family responds is dependant on a lot of things like the cultural environment your family is raised in, traditional values, degree of adherence to those values, and the individual family members themselves. For example, an asian family may be more likely to shame and express disgust or dismay at the individual who tried to ctb because of their long held value of family lineage and honor, and interpret a ctb attempt as a sacrilege of the family. A well adjusted american family may express sympathy, confusion, concern, and clinginess to the individual since the idea of family typically isn't viewed as sacred in western culture, placing more value and consideration for the uniquity of each individual family member.