She was great, but the villain kinda sucked... What do you mean there is no such movie? Here’s a clip from it. And a clip of Juliette Binoche and Kristen Stewart analysing it!
And it’s totally not just a film in a film in the 2014 drama Clouds of Sils Maria. Which is a pretty good movie, too. Not SciFi, though. ;)
(All that said - I’d totally watch that Chloe Grace Moretz Space Mutants Movie!)