It's more an issue of if there is a risk of litigation, or potential avenues of it. Having less things potentially be targets helps differentiate a products identity more and have less 'weight' if it is used in court as evidence thereof.
Another benefit is this allows them to deviate from past/common tropes that people would expect from a "Shaitan" or any other renamed creatures based on knowledge from other systems or analogous creatures of myth in future writing - even if they still borrow from the latter in most creatures cases.
I'm very late into act 3 and she has completely stopped talking and is stuck with one dialog response if you manually speak to her (cannot even remove from my party) since coming in to act 3, so I would believe the note from the other poster that it is a bug. She hasn't had nearly as much content as any of the other companions by a long shot.