Many breast cancer therapies can cause scarring, fibrosis, or musculoskeletal issues that require physical therapy. This is typically started with the physical therapist. As a partner, you can do these therapies at home. This provided needed post treatment therapy for my wife that was appreciated and brought us closer together. I highly recommend you learn such techniques to provide help and support. My wife videotaped her last session and we were able to continue doing the therapy at home.