Rix is a changling who does not hide the fact she is a changeling. This is not a common thing in Neverwinter, where she is from.
Vecna called Rix a “Pitiful Changling” before banishing her to the Shadowfell
Upon meeting Tasha in The Sanctum, Rix was in awe. After retrieving the first piece of the Rod of Seven Parts, Tasha gave Rix one of her Witches hats.