I’m really feel sorry to hear about your mother and pray that she gets alright soon. Looking at her horoscope she has the mahadasha of Ketu going on. Ketu in transit is presently in her 6th house, which is the house of disease and illness. Lagan lord Mercury is also combust. There is is certainly a difficult period for her. The period till September 2017 is difficult.
Do the following remedies
1. Take 4 dry Coconut Puja wale and rotate around her head and put it in running water. I’m sure it will help.