They are members of the New Zealand women's ice hockey team that will contest the division two, group A world championships in Asiago, Italy, next month.
New Zealand will be pitted against Poland, South Korea, Australia, Great Britain and Italy from April 5-12.
The winning team will be promoted to the first division and will be able to enter the Olympic Games qualifying series. The other Otago-based members of the New Zealand team are Sophia Leon-Dela-Barra (Oamaru), Lyndal Heineman (Queenstown) and Rachael Neville-Lamb (New Plymouth), a student at the University of Otago.
Orr and Cooper are both excited to be selected in the team.
''My brother, Joe, has had three trips overseas with New Zealand teams to Australia, China and Japan,'' Orr said.
''It's my turn now. I didn't expect it. It's pretty cool.''
Orr (16), a pupil at Queen's High School, played for the New Zealand under-18 team against Australia in Dunedin last year.
Cooper (29), a support worker, started playing ice hockey at the age of 13 when she was a pupil at Queen's High School.
She had time off for eight years while she brought up her two children, Brooklyn (8) and Madison (7). She has been back playing for three years.
''I'm one of the oldest players in the team,'' Cooper said.
''It is nice to know I still have my legs on the ice after such a long gap. The hardest part of getting back was my fitness.''
Ice hockey is not a financially strong sport in New Zealand and players must pay for the honour of representing the Ice Ferns.
It is costing each member of the team $NZ5500 for the trip, firstly to Prague, in the Czech Republic, for a training camp, and then to Italy for the world championships.
Cooper has received $1200 from supporters and has raised the rest herself by working long hours as a support worker.
Orr has received grants of $900 from sponsors and has been helped by her fitness trainer, Steven Marshall, who has waived his fees. She has also raised some cash by working at the Dunedin Ice Stadium and in hospitality at Forsyth Barr Stadium.
