died Saturday and her family has revealed the cause of death pending the official autopsy report.The 24-year-old was eight months pregnant and her family believes she — and her unborn son — died due to a “massive heart attack,” the Daily Mail reports.“She had it in her house and she was telling her partner that she had pains in her chest and her back,” her uncle Charles Murray told the outlet. “She was a dancer and we don’t think she had any underlying health problems.