I think this is where we're having a disconnect with your issue.
I would assert that the "general public" and "common media" have no clue at all what a Tiefling is nor what they look like. Her appearance is a nitpicky item strictly for the people that are very much into D&D and, even then, as we see here there will be a great divergence of opinion on the topic. This is of such little importance that I feel we've already spilled far too many words discussing it The character looks great and I'm sure audiences will love her.