It wasn't really deus ex from the beginning though. They were unexplained. But they had the chance at backfiring and causing small accidents. They weren't controlled. They just had the potential to be something more. But she never seemed to have enough power consistently in those early days. She was hardly god like. Nothing about her would even be god related until the Chthon link was established. But even then was never used as an easy solve or to change things suddenly. Deus Ex Machina is a god like device or plot foil used to solve stories easily. Wanda didn't become that until far later.