A giggling Autumn replied: "I don't know."
After the show was aired internet users blasted it for exploiting Autumn's emotions for comedy purposes.
Kanika Chhit wrote on Facebook: "Such a brainless and shameful trick from MYTV! How can you play with her feeling like this?"
Human rights activist Ou Virak weighed in, too, calling the producers "brainless".
He said: "The producer was stupid and brainless and heartless by playing around with the mind and heart of a 13 years old girl in this way."
Autumn was remarkably good humored about the prank, telling the Post that she "had fun doing the show", despite feeling "initially disappointed" that she didn't meet her mum.
She added that she misses her mother, who she thinks lives in Scottsdale, Arizona.
The makers of the show said they would apologise for the stunt.
Producer Taboi admitted that it was a "mistake".
- Daily Mail