Katherine says she's completed two Cav for cancer Katherine Princess of Wales has announced she has completed her chemotherapy and is focused on staying cancer fre in a heartfelt video Kate 42 expressed relief and hope saying I cannot tell you what a relief it is to have finally completed my chemotherapy treatment doing what I can to stay cancer free is now my focus while she plans to gradually return to public duties her health remains a priority and she will undertake a light schedule of engagements