Here's what's worked for me on the few occasions animals have escaped.
Think like a snake. They don't like to venture out into the open. Crawl around the floor, or look at everything close to the wall near where you keep them. They usually do not go far in one night. Methodically ( and as quietly as possible) look in and behind everything. I mean EVERYTHING,furniture, shoes, boxes ( even if they are closed) files, between/ behind leaning books if there is a book shelf .. they can curl up in the smallest spaces. Use a flashlight and look up and under furniture, and pull it (gently) away from the wall to look behind it. I found an animal when I rechecked, in a calm manner what I had frantically 'searched' earlier. Have your dizzy girfriend help you.
If you still can't find it, you can try dropping the temp in the room with A/C and set out a heatmat with a hide and a f/t prey near the wall, near where they escaped from. Turn off the lights, shut the door, and leave it undisturbed for a few hours at dusk/ night. Quietly check scan the room with the flash light and see if it has been coaxed out.I actually did this- We went out for dinner after I set it up. I joked with the hub when we got back that "I'll just open the door and there she'll be"... I opened the door and there she was!
Some people have had luck sprinkling powder on the floor and looking for slither tracks, or placing tape upside down along the wall ( which I would think is a pain to get off)
When you find it, get it it's own enclosure. They really shouldn't be housed together unless you're breeding them.
Good Luck.
-----
"There is a fine line between a hobby and mental illness"
