Alejandra Villanueva, 18, was supposed to come home and tell her brother about her trip to The BPM Festival in Playa del Carmen, Mexico, as ABC7 reported. Instead, her family is struggling to bring the young woman’s body home to Denver.

Villanueva was trampled to death as a crowd fled a lone gunman at the nightclub hosting the festival early Monday morning, according to CBS4. Four others were killed and at least 15 were injured, festival organizers reported.

She “is who sustained a home of a single mother with two younger siblings due to my mom being very ill . She was very young with a life ahead of her,” as her brother, Aaron Martinez, wrote on a fundraiser page for the family.

The family is working both to bring her home and to sustain the family through this loss, Martinez told ABC7. The fundraiser had collected about $3,000 of a $10,000 goal as of 8 a.m. Tuesday.

Officials told ABC’s national news organization that the shooting “was not believed to be a terrorist attack.” Three of those killed were members of the festival security team, according to BPM organizers.