Now to answer your question, it is my medical opinion that your mom first follow up with her PCP to clear her of the possibility of any underlying conditions and once she has been cleared by the PCP, I advise that she does see a Chiropractor. The Chiropractor will evaluate her medical history and put together a plan that will help restore function. Most Chiropractors work with M.D.’s, Orthoepedic surgeons, and Neurologists. They choose to collaborate because of how beneficial it is to ensure that your patient no matter their past social and medical history can be seen properly.
How Chiropractors restore function is with Chiropractic adjustments, manual therapy, proprioception and mobility therapy. Which is what I would do. Restoring function and mobility is exactly what is needed for the body to heal no matter what age. Now due to her age and past medical history, it may take longer for her body to respond.
The links from PUBmed are listed below. Hope this helps! God Bless!
I would find a well respected chiropractor in your area and have it checked out.
The treatment of this condition for an older age female would be to adjust the rib that has been subluxated. For the pain, I would recommend a mild Non-steroidal anti inflammatory, such as Ibuprofen However, due to it's chronic effect on the liver, it must be taken cautiously. Then, for stability, I would recommend wearing some type of corset or brassiere to prevent further subluxations of the rib.