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Stepsister: Driver had heart condition

Family of 4 found in retention pond Tuesday

Family: Dad may have had heart attack

KISSIMMEE, Fla. – The stepsister of Julie Lopez-Elias is speaking out to Local 6 about the crash that killed Lopez-Elias and her entire family on Tuesday.

Berlice Romero went back to the retention pond on Christmas Day for the first time since the crash.

"We are in pain," Berlice Romero said. "We were supposed to meet baby Dlias and we didn't get the chance."

Dlias was just 5 days old and in the back seat of the car when it crashed into the pond.

Romero said the driver, 25-year-old Ulysses Montero, had a pre-existing heart condition that ultimately led to the crash.

"We know he had a condition of seizures and heart problems," Romero said. "We think he was having a seizure and she was trying to do something."

But she said after the birth of Dlias, Lopez-Elias had her tubes tied and wasn't able to stop the car.

[AUDIO: 911 released in crash ]

Romero admits the couple did have problems in the past, splitting up and getting back together several times, but no one in the family believes Montero would do anything intentionally.

On Christmas Eve, Romero started a GoFundMe page for the family. She is hoping to raise $23,000 to help go toward the funeral costs of Lopez and the two children.

"We don't have the funds to pay for her and the babies, we just don't. We just want a way to take care of them like they deserve," Romero said.

She said the couple leaves behind another child, Ulysses Montero Jr., who was not with the rest of the family in the car.