Missing cat

Sienna has been missing for 2 days now after getting out. She's a dilute calico with more colors on her back than the rest of her. There's a black tip on her tail and a skin tag on her heel. She's skittish and has been an inside cat for as long as I've had her. She has a collar with my number on it and I've reported her to the lost pet pages for the area but still no dice. I hope she's okay and someone didn't just decide to keep her