well first off take a few deep breaths.

then start looking for places that are warm and dark. keep all your windows and doors closed. maybe take a mouse and put it somewhere where she can get it . many people have lost snakes and barring a total house escape, most of them get found. (even a guy whos snake got out the window found his not to long ago. i cant find the thread) dont worry and you'll find her.

good luck.