Authorities considered that operation in 2011 to be a one-off case.
But the next month, another family was caught in the same area.
Her guise was intended to put them at ease, to show them she worked in the same industry; she was one of them.
Apart from the scene witnessed as the raid took place, police say they had a video showing the mother sexually abusing her children.
It was submitted by an anonymous source from a western country who used his phone to film the abuse on his computer screen.
But those numbers belie the true scale, according to Det Supt Paul Hopkins, the head of the Australian Federal Police team in Manila who has spent the past two years investigating the crime.
Wearing a short-sleeved, Filipino-style shirt, he described the size of the trade as “monstrous”.
‘It is big money’ Stephanie Mc Court, the south-east Asia liaison officer for the UK’s National Crime Agency, said the Philippines provided a perfect storm to allow the crime to develop, with its entrenched poverty and high level of internet access for a developing country.
But there is one thing that she said was absolutely key: a widespread knowledge of the English language. After we’d been scratching our heads, the penny dropped,” she said.
One indication of how much is being missed is the number of “cybertips”, reports of sexual exploitation against children collected by the US-based National Center for Missing and Exploited Children (NCMEC).
In 2015 alone, NCMEC forwarded nearly 15,000 tips to the Philippine Office of Cybercrime and 80% referred to the online exploitation of children. That is not to say the perpetrators are only based there.
In the Philippines, there have been only two convictions for this type of abuse. Unlike previous forms of child sexual abuse, there are no photos uploaded to the internet that police can track.
Instead, the conversations are live and encrypted through Skype, and payment is made by anonymous wire transfers.
“That’s not to say that it won’t move to other countries …