You can check through other instances if you're curious. Like I said I don't know much about fedi coding but when a user (or post) is gone on .zip and others I've seen it doesn't say deleted it just gives an error page. Sal's page is still visible but there's an error for fossilesque.
https://programming.dev/u/Sal@mander.xyz
https://programming.dev/u/fossilesque@mander.xyz
However the old posts that she started are still around. I think that points toward her acct being gone because if she'd deleted the posts themselves they wouldn't be accessible. Here's one through my instance (I think it's one of the last ones she posted in science memes):