"I'm going to ring him up and get them back to him," she said.
McCaw received the Buckingham palace invite in 2015 for playing in the Rugby World Cup.
The exclusive reception hosted by the Queen and Prince Harry was attended by about 400 guests, including players, officials and supporters of the Rugby World Cup.
At the time McCaw said the visit added an extra boost to the anticipation and feeling surrounding the tournament.
Willie Apiata has a history with the All Blacks, sitting in as they prepared for the 2015 World Cup semifinal in Twickenham and spending time with the team since the victorious 2011 tournament.
McCaw said Apiata was a "special New Zealander".
"He's a good man to have around and the boys enjoy hearing his stories and calming words."