A accidental mix of alcohol and sleeping pills killed the former Dallas County Republican Party Chairwoman Missy Shorey earlier this year.

Shorey, the first woman to serve in that role, died suddenly while visiting Washington, D.C. with her husband in April.

The Dallas Morning News reports that the accidental overdose consisted of diphenhydramine, ethanol, phentermine, temazepam and zolpidem, according to the Washington medical examiner.

Temazepam and Zolpidem are sleeping pills sold under the brands Restoril and Ambien. Diphenhydramine is Benadryl, and phentermine is a diet drug.

Shorey, 47, replaced Phillip Huffines as Dallas County GOP chair in 2017.

She also owned Shorey Public Relations and was executive director of Maggie’s List, which aims to get conservative women elected to Congress.

The Dallas County GOP called Shorey a “fearless trailblazer” after her death, and many politicians, including Gov. Greg Abbott spoke highly of her.