UPDATED | June 7, 2017 9:15 PMBy Ken Molestina

COLLIN COUNTY (CBSDFW.COM) – A baby doctors were forced to deliver after his mother was involved in a multi-fatal crash, is doing ok.

Heather Trimble was 8 months pregnant when her family collided with an out of control car Highway 121 near County Road 528 in northern Collin County Tuesday. She is still on a breathing apparatus.

Trimble’s 4-year-old daughter Matilda is recovering at Cook Children’s Hospital. Sadly, both of Trimble’s parents – Julie and Wayne Trimble — died in the crash.

They were two of the four people killed in the multi-car pileup that also sent nine people to the hospital.

Ashlie Trimble, the couples other daughter was overcome by emotion when talking about the tragedy that struck her family.

“I’ve been crying since I found out I haven’t been able to stop. I honestly don’t know where to begin with how both of them,” Ashlie Trimble said.

Trimble added that what is most painful is knowing the circumstances in which her parents died.

“They were very good people, and they did not deserve to go out this way.”

While her sister and nieces are being treated, Trimble said she is knowing looking for strength to move forward.

“I have to take it day by day, and learn how to cope and get through this,” said Trimble.

Loved ones have set up a GoFundMe page for those wishing to donate to them.

Investigators with the Texas Department of Public Safety now believe the 16-year-old driver of a Pontiac Grand Prix, which was traveling northbound, slowed down to make a left turn. The Grand Prix was rear ended by a pickup and sent spinning into oncoming traffic, causing three more vehicles to crash.

Two of the four people in the Pontiac, 15-year-old Abigail Kendall and 15-year-old Brianna Gesino, both from Anna, died at scene.

Tuesday, school administrators confirmed that all of the teenagers in the Grand Prix had ties to the Anna Independent School District.

The school has offered counseling to students struggling with the difficult news.

Officials said their investigation into the cause of the crash is going to be exhaustive.

“We want to make sure we do a complete and thorough job with the investigation and again there’s a lot of parts to it,” Lt. Haschel. “So, these folks are very focused and they’re going to remain that way until they can piece everything together.”

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