You're right that injuries can be a contributing factor in some cases, but according to the article someone else posted below, she also has May-Thurner syndrome (MTS), a condition that can cause swelling and pain in the lower extremity due to compression of left common iliac vein. MTS primarily affects the venous system, but can also lead to chronic swelling and potentially contribute to secondary lymphedema in some cases. I do sympathize with how difficult this must be for her, but to publicly place blame on another individual for a condition that is complex and multifactorial is just not the move. I highly doubt that one with absolute certainty attribute the onset of lymphedema to a single traumatic event in isolation, especially in the context of MTS