It seems like the best option in the DFW area, is to be a current patient in either the Baylor Scott and White or UT Southwestern system. If your grandmother is a current patient of a doctor in either system, be sure you get the MyChart app. And register her there. They are contacting current patients ( last 3 years) via their MyChart and posting appointment times for you to schedule. I signed both my husband and I up with Tarrant County on Jan 10 and has not been contacted. My husband who has doctors in both those systems got his first dose last week at UT Southwestern and then got an email to schedule with BSW yesterday. My bad luck that my last UT Southwestern appointment was four years ago so I was not able to schedule there.