Mitchell is a member of the New Zealand squad making a bid to qualify for the Games.
New Zealand's Neroli Fairhall won gold medal in the double fita event when archery was last on the Commonwealth Games programme in Brisbane in 1982.
She made history when she became the first paraplegic athlete to win a gold medal in an able-bodied Commonwealth Games event.
Archery is not on the programme for the 2014 Games, and it could be another 28 years before it is on the programme again.
"I've got to make it now while I can.
"I probably won't get another chance," Mitchell said.
To get to the Commonwealth Games, the New Zealand team must finish in the top six in the qualifying event in New Delhi.
Mitchell must be in the top three women in New Zealand to make the team.
Mitchell (52), who works in the office of a joinery factory at Balclutha, started the sport 13 years ago.
"My husband, Colin, and me started at the same time.
"Colin gave me an ultimatum to give up netball and join him or he would go to Dunedin each weekend to shoot."
The couple were introduced to archery when son Andrew tried the sport at a school camp.
Mitchell has reached the top in a different way to most elite sports people.
She first made her mark in masters competition and then progressed to the elite ranks.
Most people who participate in masters sport do not expect to progress to events like world championships and Commonwealth Games.
Mitchell first proved her competitive ability at the World Masters Games in Melbourne in 2002, when she won two gold and two silver medals.
It has been a steady rise for her since then and she won a gold medal at the Oceania championships in Samoa in 2006.
Last year, she was a member of the New Zealand team that won a gold medal in the women's compound event at the World Cup in Turkey.
At the New Zealand championships in Hamilton last month, Mitchell won a gold medal in the matchplay event and two silver medals.
Mitchell has enjoyed the pressure of elite archery.
"I like to keep challenging myself," she said.
"I also enjoy the travel and making new friends."
When she entered the New Zealand Masters Games for the first time in 1998, she played netball as well as archery.
She did it for fun then, but the sport has become more serious for her over the past 12 years.
Mitchell won the women's compound gold medal in Dunedin this week.
