The second added: "The urine is mixed with juice as a drink."
Oebanda asked: "Who drinks it? You?"
The first girl replied: "Yes, we drink it."
"That's appalling. What a beast!" Oebanda replied.
The first girl continued: "That's what the American client wants. He demands that anyone who feels like urinating should do so, but that he wants that we show it in front of the camera."
Oebanda told CNN: "The first time they do that they were already warned not to tell anybody. He said that you are already committing a crime and if you refuse to do it again, I will come and hurt you.
"Sometimes we just don't understand why one of the kids suddenly gets sick, and she always vomits. Our psychologist said it's because she remembers what these guys on the Internet asked her to do and she was forced to do it. Every time she was forced to do it, she vomits.
"Even though they are in America, we can still track them down and bring them to justice. I know this is really a hard fight for all of us, but we need help also from America. We also need help from the people there to stop this trade. We need to stop this demand. This is really too much."
For six years, the Visayan Forum did get help from America in the form of grant aid from the U.S. Agency for International Development, or USAID.
On the U.S. government's website it lists Visayan Forum Foundation (VFF) as a recipient of $2.1 million.
The money was earmarked to expand Visayan's trafficking task force -- the PORT project -- and supporting halfway houses across the Philippines.
And Oebanda was certainly a darling of U.S. administrations. She received the U.S. Department of Labor's first-ever "Iqbal Masih" award for the elimination of child labor. In 2008, Oebanda was named by the U.S. Department of State as one of its "Heroes Acting to End Modern-Day Slavery."
But on August 31, 2012, the life and work Oebanda knew came crashing down.
Agents with the National Bureau of Investigation executed a search warrant, raiding Visayan Forum's office. They removed more than 30 boxes of documents and laptops, evidence which they said would prove that Visayan Forum employees had willfully attempted to divert funds and cover it up.
Among the allegations listed in a report prepared by the Philippine NBI :
Visayan Forum reported 664 beneficiaries in the halfway house in Matnog, Sorsogon from April 2005 to March 2006, when there were none. Social workers were instructed to receive more than double the amount needed to run their program, then return the money to the Visayan Forum's bank account. Thirty names on the Visayan Forum payroll registry do not have any data filed in its employment records. Questionable cash advances to the tune of more than $51,405.71. Oebanda had instructed her employees to falsify documents.
During the ongoing investigation, more than 80 percent of the employees have resigned or been let go. Visayan Forum's work rescuing trafficking children has come to a standstill.
Renoir Baldovino, of NBI'S Anti-Graft Division, said: "The former bookkeeper of the Visayan Forum gave us information that disbursements -- 70% of disbursements -- by Visayan Forum were supported by fake official receipts and manufactured receipts, contracts -- fake contracts -- to enable them to liquidate cash advances."
Baldovino said: "I don't believe it was a matter of not keeping the books accurately. There was an intention really to siphon off the money for personal purposes."
The information provided to CNN appears damning. The 15-page report contains more than 85 points of evidence, most of it provided in sworn affidavits from a number of former employees.
The NBI says it interviewed more than 20 former and present Visayan Forum employees.
Oebanda denies any wrongdoing, but acknowledges administrative shortcomings in her organization. She is now desperately trying to provide explanations for these allegations. She insists the allegations stem from poor bookkeeping and operating in an environment where asking for a receipt is sometimes impossible -- while at the same time having to meet U.S. accounting standards.
She says: "It's a big lie. Let's look at facts. If you look at their own audit findings, most all of their concerns are procedural which they disallowed. ... We admit that these procedures internally could have been done better, but to say that the amount was stolen are unfounded. We are offended that there was lack of due process and the rush to judgment."
Oebanda added the publicity around the allegations had already harmed her work. She said it was vital Visayan be allowed to explain its side of the story.
USAID would not comment on the case. Gloria Steele, USAID's mission director in the Philippines, said the agency would continue to support the fight against human trafficking and that USAID is in touch with other anti-trafficking groups.