Suggest Treatment For Ligament Tear In Knee With Fluid Accumulation

hello doctor, i am sathya from tamilnadu. my cosister's left knee ligament has teared and fluid is accumulated there due to slip, right now she is undergoing ayurvedic medincine for 21 days, but her pain haven't decreased. The solution for this is only operation or is there any other solution. Please do suggest my. 30yrs, 5ft 1inch, 57kg, she is got ulcer