She played Supergirl in comparison to Milly Alcock in the same way Christian Bale played Batman compared to George Clooney. Sure, they share the same name, but they are wildly different characters.

I really liked Sasha Calle as Supergirl. It was clearly a one off, but she did a great job in what what actually a pretty good movie, but was ultimately doomed to fail for so many reasons outside the film itself.