What I understand for the medical process is, panel physicians have protocols if something unusual found on x-rays, they may want to do additional tests following the protocol.
But most of the times, they submit the results (i.e. my mom’s x-rays had some scars, doctor’s office called to ask if she ever has TB, we told them no, they submitted the results and then RMO sent medical furtherance to do some additional tests)
So in your case, I am doubting why did not they inform your mom about anything unusual, and why they want her to repeat something after you called them to inquire.
They may not have submitted the medicals yet.
Because if they would have submitted medicals and additional tests are needed, your mother will receive an email/notification in my cic to go see the doctor again.
I would say you call doctor’s office once and ask them about details what tests are required and reason.