Perhaps they are playing online on a site like itch.io in which case the twine game itself is in an iframe (and they don't know how to figure out the url to the actual game file).
I think the var, you're looking for is guests.0.beauty
So try SugarCube.State.active.variables.guests.0.beauty=80 or something like that in the browser console.
While entering the letters, just keep an eye on the preview. It'll show the possibilities.
Obviously using the "" didn't work, I've tried a whole bunch of other brackets and options without success and almost gave up all my hopes of virtual fame :/