The 32-year-old spearheaded Great Britain's women in the capital at the London Olympics as they went on to claim bronze with a 3-1 victory over New Zealand.
And while Walsh admits that this was crucial in securing the future of hockey in Great Britain, she has since stepped back from the game after returning to full-time work at a PR agency.
But Walsh admits it is a case of never say never in regards to her international future, happy to take each day as it comes for now.
"Our funding pretty much relied on us getting bronze – thankfully we did," said Walsh, who has 108 caps for Great Britain.
"At least we didn’t go into the bronze-medal match with that knowledge; it was something I found out a few weeks later while talking to the CEO and performance director.
"Sport is cruel, though – one small slip and we could have lost out completely and suddenly that changes the next four years.
"I work until 5.30 and then go to club training. It's a good fit for me and it takes a while for our funding to come through so I had to do something.
"I’m going to take it one year at a time. Hunger and drive differs from player to player and at 32 you don’t think so far into the future playing-wise."