Board Thread:Theories and Speculation/@comment-25319479-20171101152711/@comment-32990726-20171103045233

I don't think she's using it through a device since Konohamaru used the Nara shadow technique and that wasn't added to the list of his personal techniques. I would say that wood style is something that happens naturally with certain people that have the correct genetic make up for it as long as they're descendants of Ashura which according to what we know about her "which is nearly NOTHING" that could be the reason.