The mother of a Las Vegas police officer killed during the Oct .1 mass shooting at the Route 91 Harvest Music Festival has passed away according to Fox 5 Vegas. The funeral for officer and U.S. Army veteran Charleston Hatsfield was held on Friday. Just hours after the ceremony, his mother Sheryl Stiles suffered a heart attack and died on Sunday. The family suspects Stiles died of a broken heart.

“I talked to the chaplain of Metro,” Stiles’ cousin Cecil Ralston told Fox 5 Vegas while discussing her relative. “He told me she kept saying, ‘Oh I want to stay, I want to be with Charleston,’ that she wanted to die.”

Stiles was on an elevator when she experienced the heart attack and fell off once the doors opened. She sustained brain injuries from the fall and was taken off of life support by family members on Sunday.

“No one expected anything like this to happen,” she continued. “It’s kind of devastating.”

The Vegas massacre is considered to be among the worst mass shootings in modern history. It left 59 people dead and over 500 people injured.

A GoFundMe page has been created to assist the family with medical expenses.