The young woman had presented herself in front of Valdevious like she was new around, but little did she know that he was a step ahead of her. He wasn't a person easy to fool and even though she could get away the first time she presented in front of him. And that thanks to his animal nature she had survived nothing that happened inside the mansion went unnoticed. He had posted a guard in front of her room while she was alone to keep an eye on her and the guard heard her conversation with her mother.
The guard told Valdevious that Selena was Sakura's daughter. That is why he sent her to kill blaze, he knew that this task was impossible, but didn't care. If anything, she will get killed and he didn't have to deal with her anymore. For now, he will enjoy her and used her until he was tired of her. Or until she meets her fate on Blazes claws. Either way he will always win at the end.