I wouldn't give up hope yet. I've heard stories of escapees showing themselves several months after they were lost.

Double and triple check EVERYWHERE. The first time I had an escape, she was gone for a couple of days and I found her curled up in an old backpack in the back of my closet. Second and last time, she was hanging out in a chair in my step-daughter's room and I found her before I even knew she was missing... Check inside shoes and boots, pockets of pants you may have hanging, check between shirts in your dresser drawers... I know it's super stressful to have one missing and not know if you'll ever find her, but never give up hope as long as you still live there...