Back pain issue. Does it set after rest?

Rest for 6monrhs is not something recommended now. If she has only back pain, then physiotherapy to build back muscle and core muscle strength is necessary. Since she has ligamentum flavum hypertrophy, if this is causing her leg pains or left heaviness, then surgery is an option to be considered.

Not all patients of pain in the back need operation. Most of them can be managed without surgery. This treatment is being suggested on bases of the information provided. However I would like to examine & investigate your  sister in detail. Control  Hypertension, Diabetes or any other metabolic disorder, if there is  any. Any way it may be tried, --. Dolokind Plus (Mankind) [Aceclofenac100 mg +Paracetamol 350 mg] 1 tab. OD & SOS. X 5 days. --. Caldikind plus  (Mankind) 1 tab OD x 10 days. (You may need help of your local doctor to get these medicines.) --. Fomentation with warm water. Let the part not be exposed to cold. --. Sleep on a hard bed with soft bedding. --. Use no pillow under the head. --. Avoid painful acts & activities. -- .Do mild exercises for back and hips and knees and ankles and feet. --.(Take help of a  physiotherapist). --Do not ignore, let it not become beginning of a major problem. --Do ask for a detailed treatment plan. Kindly make sure, there is no allergy to any of these medicines. --For emergency treatment visit nearest hospital. --Wish you a quick recovery & good health. --I hope, I have solved your problem to your satisfaction.  Dr N C Gupta MS (ortho)