We just confirmed with the secondary X-rays that is it Spondylolisthesis with Pars defect, so a fracture there. Yes, she was an athlete as a kid & in HS. Not so much as an adult as her back has been very touchy and painful for 20 years, which is when the initial Spondylolisthesis was diagnosed.
She did PT during her pregnancy because of the long time back issues, but has not yet begun postpartum PT. I expect her to be following that regime for several months, I just want to research the options ahead. If the PT does not make a significant difference, I want to be ready with the next steps already researched.