And why would you think that the teacher would leave her phone? And assuming she did and by some stroke of luck she doesn’t have it pass-code or bio authenticate, any phone is hooked up and you can’t change the time on it, you can change the time zone.
I don’t think that he cares about the riches, as he doesn’t seem to have a higher than thou attitude, but his birth father had taken care of him for a long time before he was adopted and that was at his fathers request so he could live a better life, not that he didn’t want to keep him.
She’s also in the last panel, top right corner, you can tell by hair and the weapon, not sure what the equivalent would be in a craft store.