Watch Nightmare': Family of Hamas hostage Mia Schem reacts to {{ FULL VIDEOS }} Viral video of her pleading for help

Nightmare': Family of Hamas hostage Mia Schem reacts to video of her pleading for help

A hostage video released by Hamas terrorists of 21-year-old Israeli woman Mia Schem left her family relieved that after 10 days of knowing nothing of her fate, they could see she is still alive, but the footage also left them concerned that she is living in agony from apparent injuries and the fear they said was written all over her face.

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"Until yesterday, I didn’t know if she's dead or alive," Schem's mother, Keren, told ABC News. "The only thing that I'm thinking about is my daughter. The only thing I think about is my baby."

The mother said that when she initially viewed the video Monday, she let out a scream of joy that her daughter was still alive and fell to the floor. Then she said she felt terrified, seeing her daughter's stitched-up right arm and realizing she had undergone an "operation alone without anyone to hold her hand, with terrorists around her."

Schem was one of the hostages taken by Hamas on Oct. 7 when thousands of armed terrorists crossed into Israel from Gaza and attacked a music festival she and a large number of Israeli young people were attending near the Gaza border. At least 260 victims were found slain at the music festival, according to the Israeli rescue service Zaka.