Per r/Osana, a third person has come forward and been vetted by the mod team with allegations of grooming. They brought receipts too, a series of google docs loaded with screenshots and a couple text files explaining stuff. The r/Osana post is
here and the Google Drive is
here if anyone is interested in looking through it.
The screenshots I've read, that are his side of the conversation only, are pretty goddamned creepy and are case studies in how to guilt trip someone into a maladaptive pseudo relationship. They descend into madness over time and by the end of it I wanted to scrub my skin with salt water and a wire brush.
The text files are from the victims point of view and their perspective "looking back" for lack of better terms.