"We talk to each other all the time, but I'll make my announcement on what I'm going to do in the future."
She said she would announce her decision "when I'm ready."
Mr Little has stood unsuccessfully in New Plymouth for the past two elections but has ruled out doing so again. He was yet to decide whether to stand in an electorate.
"I'm quite enjoying being a list MP having the flexibility to get around the country doing the job I do."
He said candidate selection for the 2017 campaign had not yet started "so that's a wee way down the track".
Until Mr Little, former National leader Don Brash was the only leader of one of the parties who was not an electorate MP. Mr Little was ranked at 11 on Labour's list in 2014 and only just made it back into Parliament. As leader, he will be ranked 1 in 2017.