But Martin said Bennett's previous National Government had not allocated any money for KidsCan after June.
"My understanding is that Oranga Tamariki informed them that it would not be seeking new money for them in the budget. That was an operational decision by the ministry," she said.
"I've only just become aware of this issue and I have asked officials to provide me a briefing on this relationship and the funding issues.
"This government values organisations that provide real help to children and KidsCan has obviously done some great work with a lot of kids."
KidsCan executive Julie Chapman told RNZ she had been told a week ago that the funding, worth $350,000 a year, would end on July 1.
"There's going to be quite a big impact on our ability to get the support to kids in need," she said.
Oranga Tamariki says no final decisions have been made about future funding.