The Daily Mail reports Karon Police are still investigating the incident.
With no signs of injury at the scene, initial reports suggest they believe Drescher may have died of an accidental overdose of medication and alcohol sometime between 6.30-8.20am.
Drescher spent the night with a 49-year-old German traveller on October 26, the Phuket News reports, the man waking to find she was no longer breathing.
Her companion admitted the pair had consumed a “large amount” of alcohol as they visited a local Kata Beach bar before returning to Drescher’s hotel room.
Devereaux also said the way he found out about his mother’s death was “very wrong”, receiving “no contact from police or anyone” until he called her hotel.
He said his mother was his “best friend”, who he had been in contact with regularly during her solo trip, and became alarmed when he had not heard from her.
A GoFundMe set up to return Drescher’s body and cover the costs of her funeral has raised A$42,754 ($49,000) to date.