"It's been a really hard couple of years, I've found it both mentally and physically exhausting,"
Named in the National Squad following the 2015 Ford National Hockey League, Glynn was hoping to make the 2016 Rio Olympics National Squad which is set to be named at the end of this year.
"I was really grateful for the opportunity to be selected in the National Squad, but I have had to be realistic, and as much as I don't want to stop, I know deep down that it's the right thing to do," said Glynn.
Hager says Glynn was an outstanding player who will be well missed both on and off the field.
"She is one of the players that helped create the team that it is now - she drove the culture, was a top goal scorer, was match hardened, always won the 50/50 contest and loved playing the tough games," said Hager.
Glynn had a stellar career competing at all the major global hockey events including the 2014 World Cup, 2014 Glasgow Commonwealth Games, 2012 London Olympics, 2010 World Cup and 2010 Delhi Commonwealth Games.
"It's hard to pick out a highlight, I guess the Olympics - it's always a dream to go to an Olympics and to get that close to a medal made it special.
"The thing I will miss the most will be the team environment, it isn't a professional sport and we do it because we love it and I think that creates a special kind of culture, you are all sharing the journey together.
"I have a lot to be thankful for and a lot of great moments and friendships that I will cherish for a lifetime," said Glynn.
Glynn believes the key driver to the team's success over recent years has been the "faultless commitment and passion" shown by Hager.
"He pushes players and keeps challenging us to the best we can be. Women's hockey in New Zealand is the strongest it has ever been and this is credit to Mark and the work he has put in over the last six years," said Glynn.
Although no longer in the black shirt, Glynn is hoping she will be back playing for her Roskill-Eden Hockey Club and at the 2016 Ford National Hockey League.
A full-time sports manager at Auckland's Diocesan School and coach of its First Eleven, Glynn has signalled her interest in coaching at both a regional and national level in the future.
"I'm really passionate about coaching and now that I'm not playing, I have the time to put towards it," said Glynn.
She believes the Black Sticks have every opportunity to return with a medal from Rio and she will be closely following their progress in the upcoming months.