Myrna J. Cosse, a lifelong resident of St. Bernard, passed away on Saturday, October 30, 2021 at the age of 84. Beloved wife of the late Robert "R. J." Cosse. Mother of the late Roy Otis Kridler, III. Daughter of the late Vincent (Mutt) Nicosia and Francis Serpas Nicosia. Sister of Lester Nicosia, the late Annette Nicosia Nunez and Vincent Nicosia. Proud grandmother of Amy Kridler Pflueger and Donald Kridler (Katelyn). Also survived by four great-grandchildren, a host of nieces, nephews, cousins, other relatives and friends. Relatives and friends attended a visitation and celebration service honoring the life and legacy of the late Mrs. Myrna J. Cosse in the Chapel of Charbonnet Family Services, 4917 E. Judge Perez Drive, Violet, LA on Monday, November 8, 2021. Interment: St. Bernard Memorial Gardens, Chalmette, LA. Please sign online guestbook at www.charbonnetfuneralhome.com.