Sure, because the Type II acromion was an incidental finding and not the true cause of her pain. You mention chiropractic adjustment. Did she have a single adjustment or was she treated multiple times? What kind of examination protocol did she go through to detmermine if the pain she was feeling was myofascial or joint related?
Possibilities could include that the pain is visceral and referred from another source, the wrong musculoskeletal structures were addressed, not enough time was given to adequately affect change, the aggravating activities were not stopped and the correction provided was not allowed to affect change, etc.
Just a side note, pinched nerves do not cause pain. Pinched nerves cause a loss of function to that nerve which will produce numbness, tingling, muscle weakness & atrophy, etc. Nerve irritation which causes overactivity of the nociceptors (pain receptors) can manifest as pain due to heightened sensory afferentation. So, the pain receptor nerve is at a higher chemical activity level which makes it easier to fire and once it fires enough, chronic pain has set in causing the nerve to fire automatically. It's kind of like a training response for the nervous system.
Your client is in pain because there is something that is causing those sensory nerves to fire more than she should. The massage therapist and chiropractor either didn't treat the cause or the aggravating factor was not determined and addressed. She needs a better examination.