The intent was indeed for a non-traditional female character, so that itself does make sense. She's a bit more robust, masculine and notably inhuman than what one would expect after all, given just how much she has adopted the mantle and identity of a primalist. Making body, mind, heart and soul more savage and true to natural form has... unusual consequence, but nothing to be unexpected. As for the name, that does surprise me some. Arthera sounds more feminine just by the ending suffix, which was the intent through design. Needless to say, it was all written with feminine pronouns.

I am sure that error would go over well given her personality.