Soooo ...
Since it seems that Larian have no intention to anyhow change or altern Shadowheart appearance.

How about use it instead?
When she "shockingly reveals" that she indeed worship Shar ... let us make passive Religion roll ... prefferably with Advantantage for them or low enough so Clerics of Shar or Selune almost certainly pass.

And when suceed in that roll ... let it unlock another short dialogue like:
Tav: Yeah no shit ... i mean you are wearing her symbols, refuse to help others and keep bitchin against Seluna.
Shadow: So, you noticed. Most people tend to oversight such hints. ... Anyway are we going to have problem?

Wich would lead back to our standard conversation where we either tell her that we dont care or that she should leave.


I still dont understand why cant we change Race for our hirelings. frown
Lets us play Githyanki as racist as they trully are! frown