Was any food eaten?
Did you check the cage of your male joey?
They can hide pretty well, I once searched one of mine during hours before finding her hidden inside a TShirt (that I had already searched several times) in the middle of my clothes...
In the meantime, what you can do is leave food and sleeping pouches in every rooms where you think she might have gone, keep the lights low, keep every body of water (WC...) closed and any possible open pipes too (AC, ventilation, bathtube evacuation...) and keep the appartment closed...
Be aware that gliders can pass under most doors, and if they can find a crack in the walls (or in the furnitures), they will go and explore, wWhich is why you should stop letting them roam free in your room until the room is fully glider proofed, that means you need to you find out where they do disappear because 2 gliders getting out in a row is no accident, there is an issue somewhere... Either they can pass under your door, either someone else opens your door, either there is a small hole in the walls by which they pass, but either way, they obviously get out.