Please help: dog is getting meaner by the day

Sorry for the long story…my dog is 9 yo pit mix. We got her from a shelter when she was 8 weeks. She was perfectly healthy except for a deformed or injured paw. (That hasn't affected her at all.) About 4 yrs ago she started getting anxious and growling at strangers and other dogs. Vet prescribed fluoxetine. Ff a few years and it's getting progressively worse. She started growling at family members, mostly at night. Vet prescribed trazadone 50 2x day and clomipramine 20 mg 2x day. Now she snarls at anyone who looks like they're coming near her. Or even looks at her! She had a vet appt 3 weeks ago. The new meds have seemed to do nothing. I have to lock her in a room when people come over (which is rarely).
This is a video of her laying on me in (my) bed, growling at me.
We have a call in to a behavioral specialist, but the wait is long.
Wondering if anyone else has ever dealt with this.
Thanks!