Ancestry.com lists date of death as April 6, 2006. 

Obituary trancsribed from April 8, 2006 edition of EC Leader-News:

Diana Jean Zack, 55, of Edna, died Thursday, April 6, 2006.

She was born December 13, 1950 in Victoria to David Ludwig Blinka and Marcella Mildred Rod Howard of El Campo.  Mrs. Zack was a Secretary and Bookkeeper for C&B Hasdorff.  She was a members of St. Agnes Catholic Church and K.J.Z.T.

Survivors include her husband who she married Oct. 3, 1970, Richard Zack of Edna; mother; step-father, Raymond Howard of El Campo; daughters, Carolyn Zack Grimes and husband Dr. Kevin Grimes of Houston; son, Richard Andrew Zack of Edna; sisters, Becky Wisnieski of El Campo and Karen Munoz of Wharton; brother Paul Blinka of Lake Jackson; and granchildren, Jordan Nicole Zack and Cian Richard Grimes.

She was preceded in death by her father.

Visitation is today, Saturday, April 8, at 1 p.m. at St. Agnes Catholic Church of Edna.  A Rosary will follow at 2 p.m. and Mass at 3 p.m. at St. Agnes Catholic Church of Edna with Msgr. Michael O'Shaughnessy officiating.  Burial will follow at Red Bluff Cemetery near Lolita.

Pallbearers are Trenton Kucera, Sam Bichop, Jeremy Kurtz, Jonathan Fowler, Rodney Fowler and David Buchanek.