Sheriff: Mom Responsible for Texas Murder-Suicide Authorities say a Texas woman fatally shot her husband and three sons before killing herself in their home last week. The Navarro County Sheriff's Office said Tuesday 33-year-old Guadalupe Ronquillo-Ovalle shot her husband Israel Alvarez, as well as their three sons, ages 4, 8 and 10, before fatally shooting herself in the head. Investigators say the deaths happened sometime last Thursday or early Friday. Their bodies were discovered Sunday night by a relative at the family's house near Rice, located about 40 miles southeast of Dallas. Officials say a motive has not been determined. The killings came less than two weeks after the father was charged with family violence.