Cynthia Dimas Molina, 40, died of blunt force trauma, according to the Atascosa County Sheriff's Office. Her body was found in a river on February 24, 2018.

Her brother, George, is turning to the public to help find who killed Molina, who was a mother of three. 

"She has a brother, she has a sister, she has a lot of people who loved her and we don't know anything about her and we're asking for help," George told News 4 San Antonio.

Molina may have made some mistakes in her life, but she shouldn't have been killed for them. The family is convinced that someone out there knows what happened.

"She lived a lifestyle where she was on drugs, she lived a lifestyle where she was around shady people. I know some people are hesitant to come forward as soon as something like that happens now that nearly a month has gone by," George told the TV station.

If anyone has any information about this case, please contact San Antonio police. You can also leave information on their website -- or even text your tip by sending the word SA Tip to 847411.