I'm guessing she refused to use that script, which prompted Scum-san to task her with writing a new, better one, setting our girfailure on her quest. However, we already know they'll discard her work, and probably try to force her to go with the original anyway.
Meaning that MC-san will of course come to save her, officially making her part of the movie research club, and she'll finally understand she's in love with her, thus initiating the next arc: Sheltered Girl Vs Girfailure - the prize: MC-kun's virginity.
At this point, I'm actually rooting for Girlfailure. Even if she has terminal brainrot and negative luck stats, she's still way too adorable. Honyooooooon.
If I get that 100% correct, someone please gently twist my nipples.