Lost large German Shepherd Bella female chipped (NW)

Bella is elderly, while in her beard. A bit on thin side, needs thyroid meds. Has food allergies and needs special food. She disappeared from our yard on Chambliss Drive backing Torrey pines. Near La Madre / Washburn/Jones / down to Ann or further. Posted every app available. Has not shown up at animal Foundation where we adopted her 6/2018. She is chipped so please take her to any vet or fire station or shelter or animal foundation for FREE chip read! We love her so much and need her back. PLEASE help! ?