>>98839950"Her powers, she's never had any training, I'm talking about Scarlet Witch. She never had any training; she's figuring it out. Arguably, you could say that that's why her powers are much more chaotic and much more loose in the way that we showcased those light effects. In [Doctor Strange], some of what you might see today, even the cover of Entertainment Weekly, it's much tighter. It's all about focus. It's all about pulling energies from other dimensions in an organized and purposeful fashion, which is why they can do a lot more than she can in, at least, a much more precise way." - Kevin Feige
Given the Fox deal is still at least 12 months away, and they can't do anything till then, and they have to explain Wanda's powers in Infinity War and/or Avengers 4, I'd say even if Wanda is retconned to be Mags daughter, she won't be a mutant.