The victory was Richdale's first CN Canadians Women's Tour victory and earns her an exemption into the 2013 CN Women's Canadian Open at Royal Mayfair Golf Club in Edmonton, August 19-25.
"This is pretty awesome, that was my main reason to come out and play at these CN Events was to get that exemption," said Richdale, who now heads to play on the LPGA Symetra Tour this week. "I'm really excited to be able to go play in Edmonton because I used to live in St. Albert, so it will be fun to go back there."
Brooke Henderson, 15, of Smiths Falls, Ont., was runner-up after a final-round even-par 72. Henderson birdied two of her final five holes to finish at 2-under for the tournament and earn low amateur honours.
Augusta James of Bath, Ont., finished in a tie for third with amateur Simin Feng of Windermere, Fla., at 1-under 143. South Korea's Soobin Kim was fifth at 144.