Before Anson's death, the two were violently antagonistic. Because of his hatred for Stanley, Ansom naturally hated and despised Stanley's closest followers, including Wanda. Wanda was not only slaughtering Jetstone troops whom he badly wanted to defend, she was also defacing Jetstone's corpses, and using them to croak even more of his followers. Wanda considered Ansom to have stolen something from her that was of even greater value than the Jetstone troops she'd crocked. She may have been referring to the Arkenpliers or to Jillian or to both.
After Ansom's decryption, the two have a master-construct relationship. Ansom's will and desires are totally defined by Wanda. Wanda regards Ansom as a useful thing.