He may have ‘gone native’ and gotten over his fear of them.
I just don’t know.
I can set the mouse aquarium on the floor, I suppose.
Maybe he’d feel them running in their wheel or smell them.
Good luck. Our indoor cat got outside just the other night for the first time ever (well, since it wandered into our yard as a juvenile 5 years ago). I felt so bad to think of it being outside in the cold and rain and me leaving the door open that she wandered out of. But it knew enough to hide under our shed.
I imagine Alice is just as smart and found shelter in your home somewhere. A buddy of mine lost his large boa (6-foot plus) back at the multi-unit old house back in college. For years afterwards he would get calls every once in awhile from the landlord that someone had caught a glimpse of the snake before it went behind a board, etc.
Alice is probably making the most of his adventure, and perhaps a change in weather will prompt him to join you again.