My cat went missing

My cat is about 7 months old. She is in heat cycle and went missing for 3 days now. I dont know what to do. we dont have a animal rescue near by. I am so sad and hurt without her. please suggest. and I a beg you to pray for her to be safe and sound

Outside cats sometimes go off for days and then return. Don't give up hope yet.

PUT SOME TUNA outside and meow