Is Cat and Girl an ingroup staple, now? That's great! I've been reading Cat and Girl since before Girl's hair turned into antennae! THE CIRCLE GROWS EVER TIGHTER.
For the rest of you, here's a link: http://catandgirl.com/?p=5117
(I've just realized that all Cat and Girls are gifs, not pngs, which is a little strange.)
I've only been following Aella since >>2259 so it took me a little while to figure out that you were referring to https://www.reddit.com/r/Drugs/comments/4whrnx/i_did_so_much_acid_i_almost_died/
As to your question: plausibly, it could be. The timing works out. However, opening a door of perception and choosing to ignore what's behind it is a common enough metaphor that they don't *have* to be related. I guess you could ask in a comment or by emailing the author.