Muscle Injury. This problem please help!

My mother had a muscle injury 20days back due to which she was unable to put his feet on floor and also wasn't able to walk. She was in extreme pain. We had applied ointment like move - iodex. And had treated the swelling and pain in nerves with icing. Though the swelling was gone but the pain was still there and again when she was trying to walk, the swelling occurs. Again icing applied regurarly for 2-3 times in a day. Swelling has gone. But she complains of regular pain in her knee plus unable to walk and do her regular rcoutine work. Further i want to add she is not allowed to take any form of painkiller. She get admitted last year for internal bleeding throug h stool. But everthing for rule out under diagnosis. Therefore, doctor suggested not to have pain killers only crocin can be taken. Due to corona we are afraid to take her to the doctor clinic. How to treat this problem please help