I would say that at only 2 months following the injury a little tightness is to be expected. At 3 months the soft tissue healing will only be at about 85% of the tensile strength of the previously uninjured tissue. I would simply keep on with the stretching and strengthening work and give nature more time. if i was treating this patient i would be using the Glen Hunter soft tissue mobs which combine phsiological and accessory stretching (similar to frictions) . Good luck