It's been a week have you Tried to take her swimming? If not put her in the bath tub have her Float in the water don't let her touch the floor, keep the water WARM. lets see what she does, she'll either use that leg and go swimming or just sit there. you can take her two friends with her so she's not alone...
and I think I worded it wrong but I brought her and another ducking with me, like just them two