hi, thank-you for the brief history of your mother. I am sorry to hear that at this age she had to undergo so much pain and aches. without wasting time, as you told she had a fall, and post that only this blackness on her forehead though it is a month old injury. I think she had a fall and internal bleeding , that is the reason of the black spot and swelling. Usually any swelling should come by a maximum of week or so. Human body is a self medicine for itself, so body removes the excess waste from the excretary system. Also, I am unsure if you have met a physician that day. If not I will recommend you to meet one and get checked. Also, I am not sure , where at this age she is mobile or no because continuous lying down can also lead to pressure sore at this age. as we age the human body loses its capacity to quick healing. Just on a safer note I recommend to visit a physician and get checked once. If all turns out fine then you can help her by just requesting a physical therapy services at the door step. They will workout behind the breathing exercises , simple passive or active movements which will help the functioning of the lungs and the haemodynamic to the optimum again. Also, kindly take her out in the sun for sun baths and provide good nutrition. Sunbaths will help her to dryup the wounds and later on it will also provide the vitamin D which is the natural form to make her bones stronger. I have been seeing old cases beteen 60-100 and I deal with them by providing regular breathing exercises, active or passive exercises, sunbaths, proper diet and care, this has led my old patient to help them functionally motivated and also have helped them to be energetic and avoid falls as well. I wish your mother the grace of God and a good health soon. Regards