It seems clear that what happens to Monica in WandaVision will carry over into the sequel to Captain Marvel, especially since this series will also explain what Monica did after Carol departed into deep space with the Skrulls. The way Parris dances around the question, it seems like fans will find out soon what exactly happens to Ms. Rambeau in WandaVision that will be important in Captain Marvel 2.
In an interview with Rotten Tomatoes, Teyonah Parris was asked about what she is excited to explore with Monica in upcoming projects like Captain Marvel 2. Of course, Parris says that she can’t say much without spoiling WandaVision:
“Without giving anything away? It’s like you haven’t seen anything in WandaVision so it’s hard to say what I’m looking forward to carrying over if you don’t know that yet, so not really.”
Parris did express her excitement at working with Brie Larson and Iman Vellani, and that fans will probably get to learn more in “a couple weeks,” likely meaning once WandaVision has finished:
“I am excited, just as the actress, to join Brie and Iman and see what putting these three superheroes together. Captain Marvel, Ms. Marvel, and Monica Rambeau. What will happen in that film? The rest we’re just gonna have to wait a couple weeks before we can really talk about that.”