The parents of a 13-year-old Southern California girl, who was taken off life support Monday after attempting suicide last week, said she was bullied for years at school.

Rosalie Avila, who studied in the eighth grade at Mesa View Middle School in Yucaipa, was admitted to hospital after she was found hanging in her bedroom last week Tuesday, her family said.

"My daughter is a victim of bullying… the world lost a treasure," Charlene Avila, her mother wrote on a GoFundMe page after Rosalie's death.

The family has been trying to raise money to cover her funeral and medical expenses by setting up a GoFundMe campaign on the website.

One of the family members alleged that the school district was aware the girl was being bullied for years.

The family said Rosalie's death has not deterred her tormentors, who have now turned on to bullying them.

According to CBS Los Angeles, someone sent Rosalie's parents an image on social media that reportedly read, "Hey mom. Next time don’t tuck me in this," along with a photo of a bed, "Tuck me in THIS," with an edited image of Avila’s face pasted over someone pointing to an open grave.

"For you to do that, I mean, you’re heartless. You’re a very heartless person, and you have no compassion," Avila said, addressing whoever was behind the message.

Avila was described on her GoFundMe page as smart, loving and an artist, who dreamt of becoming a lawyer.

"Her smile would light up the whole room with her laughter. She’s very smart and always had good grades," the page read. "She’s loved by so many people & by her family. She was daddy’s girl and mommy’s princess."

Her parents told reporters that Avila left a note for them. "Sorry, Mom and Dad. I love you," read the note left by 13-year-old last week. "Sorry, Mom, you’re gonna find me like this."

Her parents said they would donate her organs. They said they believed their daughter was a victim of bullying after reading her note.

"They told me I was ugly today," her father Freddie Avila said the eighth grader wrote in her note. "They were making fun of me today about my teeth."

The parents have handed over Avila's journal over to the police, according to CBS Los Angeles.

Avila's father said that this tragedy should act as a wake-up call to schools. "I did everything I’m supposed to do as a father, and these people did not respond, because those bullies are still at the school," Freddie said. "They’re still there, and my daughter’s gone."

While Roselia was on life support last week, the Yucaipa-Calimesa Joint Unified School District announced the teenager's death in a news release, saying it was saddened by her passing.

"No one can fathom the heartbreak and confusion that we are certain many of our students and their families are feeling right now, especially the families of those students that have been most closely struck by this event," the Dec. 1 statement had said.