...If animal control hasn't picked her up
If she isn't in heat, looking for mates
Is she microchipped?
Is she an inside-only cat, or inside/outside?
Leave a piece of clothing near some food, to entice her closer
The cat is most likely hiding within a couple of houses; have those yards been scoured?
I know an animal communicator who can help!
Could someone have taken the cat...a friend or relative?