A misguided subplot involving Sadie's group of frenemies — particularly one whose venom toward our heroine feels neither truthful nor necessary — seems like a wasted opportunity.

Source: https://www.cbc.ca/news/entertainment/stephen-king-the-boogeyman-review-1.6853283?cmp=rss

Since Sawyer and Will do not know of Sadie's experience, it is possible the sequel will explore her continuing to hide this fact from them and trying to carry the burden on her own.

Source: https://screenrant.com/the-boogeyman-2-cast-story-details-updates/