I checked CPT Rhodes out on AKO (Army Knowledge Online). She is an Active Duty (regular army) Medical Corps CPT. That means they just can’t blow her off like they did MAJ Cook because he was a reserve “volunteer.” I think she is very brave to do this, as was MAJ Cook. I don’t what to denigrate Dr. Taitz, she is a sincere person, but I do wished CPT Rhodes had an attorney with a little more gravitas.
Active duty and regular army are not the same thing. Unless her commission came from attending at West Point, she's unlikely to be RA, (although in times past at least a few ROTC grads were also tendered Regular commissions). Even people who come up through the enlisted ranks and get their commissions through OCS or ROTC, generally get reserve commissions. The distinction mainly matters when the RIFs come. Most likely her commission would come from attending a special medical officers commissioning school or by direct commissioning and then some short training on "The Army". .
Wow, I just discovered they are apparently so hard up for doctors, they've reduced the obligation for already trained doctors to two years.