Authorities Monday confirmed that the autopsy on Victoria Siegel, the 18-year-old daughter of The Queen of Versailles stars David and Jackie Siegel, has been completed.
Michael Marder, the family's spokesman said that the "the Siegel family is devastated and heartbroken by the loss of their beloved Victoria.
"They are hurt, deeply wounded and they are grieving," Marder said, calling Victoria "a beautiful spirit with a wonderful smile who was greatly loved, and will be deeply missed."
A family friend told the paper the teen's death comes as "a total shock," as "she was full of life and laughter."
The friend added that Siegel had been doing well in the month since she finished rehab. The teen had shown an interest in art and photography, according to the paper.
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A private funeral service was slated for Friday, according to the paper.
As RadarOnline.com previously reported, authorities found the 18-year-old unresponsive in the family's Windermere, Fla. home on Saturday afternoon, and the heiress was subsequently pronounced dead at Ocoee's Health Central Hospital.
"It is likely that Victoria ingested one or more drugs prior to her death," he said Monday. "However, we cannot determine at this time whether or not the drugs she took were in fact prescribed medication, something else, or where and how these drugs may have been obtained."
The family, which owns Westgate Resorts, gained fame via a 2012 documentary that chronicled the building of their 90,000 sq. foot mansion.