One of our retrievers, Tasha, snapped her cruciates in her back legs when she was young on two occasions They were both operated on, no plates required, after a period of rest she recovered well and had no further problems through out the rest of her life. I’d get a second option on Daisy & then do what your heart tells you. She will come through it, she has love on her side. It is hard when you can see they are hurting, you just want to make It better.