Hello! Thanks for playing and the kind words!
The 'Staring into the Mirror' step is not Mosi functionality no. I coded it up myself with some javascript and was pleasantly surprised by how it all worked out. It wasn't too hard and can be copied easily, if you fancy giving it a go.
I was thinking about making a game as a 'tutorial' for how to do it, as that functionality might open up a lot of other gameplay ideas for others. I've been looking into how to do it in Bitsy and, while it's a little more complicated, I think I can probably do it there too.
Sorry about having to restart. Do you remember how you got stuck in the mirror, by any chance?