The wife of a Texas bus driver killed in last month's crash was found dead in her home, officials said.

Dianne Barrett, 55, died in her New Braunfels, Texas, home Tuesday morning, two weeks after her husband, Murray Barrett, 67, was killed in a bus-truck collision that left 13 dead, the San Antonio Express-News reported.

Information about her death hasn't been released as the family awaits her autopsy results.

"She was by herself at the time of her death," New Braunfels Police spokesman David Ferguson told the news outlet.

First Baptist Church of New Braunfels, where Dianne Barrett was a ministry assistant, released a statement on her passing on Wednesday.

"We were deeply saddened to learn of the passing of Dianne Barrett," the church said in an email to the San Antonio Express-News. "We continue to pray for our Lord's mercy and comfort for our church family members who continue to grieve."

The bus was carrying 14 senior citizens, who were in their 60s, 70s, and 80s, when a pickup truck plowed into the vehicle, officials said.

Thirteen people, including Murray Barrett, died in the March 29 collision in Concan. The victims were First Baptist Church of New Braunfels members who were on their way home from a three-day retreat at an encampment. One person survived the crash.

Jack Young, 20, the driver of the pickup truck, admitted taking prescription drugs, including Clonazepam Ambien and Lexapro, before the crash. Marijuana was also found in his truck, according to court documents.

Witnesses told police the truck was swerving erratically before the crash, leaving both vehicles mangled with glass and debris scattered on the road.

A witness told the Associated Press that Young was also texting while driving.

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Young hasn't been charged, and the investigation remains ongoing.