Lost Tortie Cat with Green Eyes - Spruce St Help!

She is a tortoiseshell/brindle cat, with GREEN eyes, very lovely, usually meows back when my mom calls her, she's like my moms emotional support animal, so she doesn't like to be held unless its by her. My brother left the backdoor open around 11-1130 pm june 24th and she just walked out, i noticed the door open at around midnight and we searched that night for about 2 hours and heard nothing. She might've gotten taken in by someone since she's so nice.