Carmen Brown of Arlington, Texas, told The Dallas Morning News she was right behind the victim when she was boarding the coaster Friday at Six Flags Over Texas. She said park employees told the woman she was secure as long as she heard a click.
"Everybody else is like, 'Click, click, click.' Hers only clicked once," Brown said. "Hers was the only one that went down once, and she didn't feel safe, but they let her still get on the ride."
The park in Arlington opened on schedule Saturday, the Fort Worth Star-Telegram reported. The Texas Giant will remain closed until the investigation is completed, the park says.
A Rockwall, Texas, couple, John and Darlene Putnam, told the Star-Telegram a young man and woman who appeared to be the victim's children were also on the ride. The Putnams were waiting in line for the roller coaster's next trip.
"They were screaming, 'My mom, my mom! Let us out, we need to go get her,'" John Putman said.
The Texas Giant, 14 stories high at its greatest elevation, opened in 1990. The ride was renovated at a cost of $10 million before reopening in 2011.