Ask your colleague to chart out her symptoms on a time-line and correlate them with emotional events in her life on another parallel time-line. Once she notices the obvious relationship between her physical symptoms and events in her emotional life, then you can talk turkey with her about TMS. It seems as though that's a necessary first step in the process of talking about PPD symptoms. Before the patient has that perception, he/she will always be coming up with structural, biochemical or genetic arguments to explain his/her symptoms. But once a patient sees, for example, that losing a job or a divorce preceded the onset of TMS symptoms, then you can speak to them about the process that generates PPD symptoms logically and rationally.
I think that Dr Sarno is right again when he observes that TMS is a process going on all around us in Western culture and that 95% of the aches and pains that people are going to chiros and PTs for are in fact psychological in origin and triggered by repressed emotions. Huge numbers, yes! I remember when I was in PT for a so-called 'herniated disk' ten years ago or so, that all of my fellow sufferers also had just underwent some emotionally traumatic event in their lives. One woman had just lost her job at the same time her husband lost his and at the same time her mother (with the beginning stages of dementia) moved in with them in the upscale house they could no longer afford. Bingo! CTS in her hands and wrists, which, not surprisingly, she used in her work as a technical writer. Another woman, who had double spinal fusion following a total collapse out running, had just been divorced not long after her father died. She'd also lost all her money in the stock market and was obviously "mad as hell" but had been taught by her religion to be good and charitable. There was another woman in there who was trying to be a "perfect mother" for her teenage children and was constantly on the cell phone talking to them morning, noon, and night. She had chronic back pain and had to do Pilates on the reformer day after day, all with no measurable improvement. She just kept talking to (and monitoring) her kids on the cell phone while doing her exercises. And then there was the technician who had found his mother dead in her cubicle at work who also had an alcoholic abusive dad. He was also a perenial nice guy forever doing chores assigned to him by his stay-at-home obese wife. He had two herniated disks! I never noticed these little clues until years later because I thought if I kept working and working at PT I would cure the underlying structural cause of my own condition. I think if you look around you, you'll start to see many, many people with TMS who are unconscious about what's really going on.