Well, I'm somewhat chagrined to say that the issue was that she hadn't verified her discord account email. Tempted to delete this thread but I'll leave it up in case there are any other people out there that forgot to verify.

Hey All, Trying to get this running on either an old mac pro 2013 i have or a 2015 mbp. I have a windows 10 install on both, and everything seems to install fine. I run the launcher, authorize discord in the web browser, get the "you may now close this winow" window, but the game does not ...