The main survival drive is to create attachments to others. This can create a very complex situation when the abuser uses both fear and a relationship with the victim, which can make abusive relationships so complex and difficult to understand to people outside of the relationship.
When an abuser hurts the victim, although the victim may disclose the abuse to third parties (such as family members, social care and the police), the trauma bond means that the victim may also wish to receive comfort from the very person who abused them. If the abuser re-bonds with the victim, it is likely that the victim will return to the abuser and cut contact with the third party. Any contact the child has with the abuser (even a text or Facebook message) can re-bond the victim to the abuser. Whilst it can be painful and frustrating to witness this situation, the fact that the victim has disclosed at all is a massive breakthrough.