Swimming with that leg should help the circulation, which may help move the fluids out of the foot. Too bad there is not a comfortable, natural position for runners that props their feet up. (I can just see her lying on her back, nibbling bonbons, with her feet propped up on a pillow
)
Go with the swimming, and try to be patient. Good that you could get care for her.

Go with the swimming, and try to be patient. Good that you could get care for her.