In other artist's defense, Ahri's lore is based upon her being a lure of some sort to consume her prey's life essence. :] There are overly sexual pieces of her, but it's kinda her "thing". BUT, I agree with you on this as well. This piece is well done and it's sassy in it's own way.
A temporary charm isn't exactly turning someone into a "furry". She is a half fox and her lore comes from the Japanese folklore for the nine-tailed fox which did that very same thing. The same thing can be said in the Greek mythology for the Siren.