She hadn’t imagined it would take nearly as long as it did to find Theo and free Draco. And in the end, she did not find Theo, Snape did. She also played nearly no part in freeing Draco. When she met with the DMLE after Draco was taken into custody, they believed her instantly. The issue was less about whether or not Draco saved her, but more about a contractual problem. The only way he could be freed from Ministry custody and not be punished magically by the contract was to capture and imprison the offending party in his stead. 