It'd just model a world where if the machine it sees in the mirror turns off, it can no longer influence what happens.
When the function it uses to model the world becomes detailed enough, it can predict only being able to do certain things if some objects in the world survive, like the program running on that computer over there.
It seems like Qualia the Purple is a manga where after a certain point, the author introduced magic and started giving philosophic explanations for how the main character can do magic, turn into other people, go back in time, and generally do whatever the fuck she wants except save one person. What does "actually try" mean?
I'm interested!