Image of Margaret Joyce's death certificate online at NB Provincial Archives. She died 1 July 1944 at the J.M. Sanatorium in The Glades, N.B., of pulmonary tuberculosis, age 16 years, 10 months & 17 days. Her parents were George Joyce, born Moncton and Lucy Lutz, born Hopewell Cape.
Also on same website is image of marriage record for George E. Joyce (age 24) & Lucy Ada Lutes, married 10 Oct 1926 in Moncton. George was son of Thomas George Joyce & Etta Angus? [her surname hard to read].
Good luck with your research.