Jessica Lewis posted back-to-back 67s in the final two rounds to take second place at minus-nine. Angie Rizzo and Virada Nirapathpongporn, a two-time winner this season, were one stroke further back at 8-under-par 208.
After birdieing the final four holes to win, Granada was relieved.
'What a relief,' said Granada. 'When I stood over the last putt today, I knew I had to make it to win and I just told myself, 'It's my time now.''
Two-time winner this year Nicole Castrale carded a 3-under 69 in the final round to end at 7-under-par 209. She was joined there by Allison Hanna and Sun Young Yoo.
Granada was not the only winner on Sunday. Five players earned their LPGA Tour cards for the 2006.
Koreans Seon-Hwa Lee, Kyeong Bae and Yoo were three of those five. Also gaining their LPGA playing privileges for next year were Nirapathpongporn and Castrale. Those five were the top-5 finishers on the Futures Tour money list this season therefore gaining the LPGA cards for next year.