They travel to Delvile Castle , where Cecilia finds Mortimer 's behavior yet more confusing , and Mrs. Delvile makes clear to her that she does not want Cecilia to marry her son .
He travels with her and Mrs. Harrel to Delvile Castle , where Cecilia finds Mortimer 's behavior confusing , and Mrs. Delvile makes it clear that she does not want Cecilia to marry her son .