Karpenko won league championships with the Northwest Stars (Peewee AA) and the Winnipeg Sharks (Bantam AAA) . In 2005, she played in the Mac’s Midget Tournament and won a gold medal with Notre Dame. She was honored as MVP too. The following year, she captained Notre Dame to another gold medal at the Mac’s Midget Tournament in 2006 and was named MVP. She also won the gold with the Notre Dame Hounds at the 2006 Saskatchewan provincials (Midget AAA) and at the Western Sheld in 2006 also. She captained Manitoba to a bronze medal at the 2007 National Women’s Under-18 Championship. She was a member of Team Manitoba which won a silver medal at the 2007 Canada Winter Games in Whitehorse, Yukon. In 2007 and 2008, Karpenko captained the Notre Dame Hounds to the Saskatchewan Female Midget AAA Hockey