Ok, I emailed someone through McMillian and they forwarded my email to someone in charger of the book. This is what they said:
Hi, Natalie! I'm Rachel Murray of Godwin Books - it's so nice to e-meet you, and deepest apologies for the long delay in our response to your story for the Haunted States collection!
This year has been a bit of a whirlwind, and so it's taken us longer than we'd hoped to evaluate our wonderful submissions. We're still in the process of choosing the stories that will be featured in the collection (right now, our plan for publication is Spring 2023, in time for the Halloween season), but as soon as we're done, we'll notify each person whose work is selected. That will be before the end of the year.