Stephanie Gonzalez recently graduated high school, got married and became pregnant with her first child.
Early Monday morning neighbors called 9-1-1 after they saw that her house, at the 7400 block of Puffin street, was on fire.
Her sister, Neyeli Garcia said Gonzalez was in the living room watching TV when she left the home Sunday night after 11 p.m.
"My neighbor started calling me. I arrived here around 2 a.m. and my house was on fire. I asked for my sister and they said nobody was inside," Garcia said.
But someone was inside.
Inside the home, investigators found Gonzalez dead on the kitchen floor.
"They told me they found a body with a baby inside. It had to be my sister because she was pregnant. I just I still can believe it," Garcia said.
Authorities tell Action 4 the fire was set intentionally and Gonzalez was murdered.
"I just have no idea who it could be if I did I would have said something," Garcia said.
Garcia isn TMt the only one shocked to learn Gonzalez was murdered.
Her mother was in Chicago at the time of the fire and arrived in town Tuesday night.
"I don TMt know because we don TMt have enemies, her mother Maria del Carmen Herrera said. How do I explain it? I help people; I never hurt anybody."
The Hidalgo County Sheriff TMs Department is releasing few details on how Gonzalez died as they investigate the murder.
Family members say she was married last year and was pregnant with her first child.
They hope authorities are able to catch whoever cut her life short.