The fridge has tight spots you need to check.

A snake with find something warm and chill there for a while. Anything heated by being powered on is a good bet. Cable boxes, refrigerators, heater, etc

But also they will hide during the day just to feel secure.

I would break your house down into small quadrants, search one as if you were a corrections officer looking for contraband In a jail cell. If a room is bigger, break it down to sides of walls and everything in the middle. Go from top to bottom or bottom to top. The main thing is that you look at and through everything!

Good luck finding her!