Let's take a look at how history has voted for it
2015-16: NPOY - Breanna Stewart 19.4 PPG, NSL - Kelsey Plum 25.9 PPG
2014-15: NPOY - Breanna Stewart 17.6 PPG, NSL - Kelsey Mitchell 24.9 PPG
2013-14: NPOY - Breanna Stewart 19.4 PPG, NSL - Jerica Coley 29.5 PPG
2012-13: NPOY - Brittney Griner 23.8 PPG, NSL - Jerica Coley 26.3 PPG
2011-12: NPOY - Brittney Griner 23.2 PPG, NSL - Elena Delle Donne 28.1 PPG
2010-11: NPOY - Maya Moore 22.8 PPG, NSL - Kevi Luper 23.7 PPG
2009-10: NPOY - Tina Charles 18.2 PPG, NSL - Alysha Clark 28.3 PPG
2008-09: NPOY - Maya Moore 19.3 PPG, NSL - Angel McCoughtry 23.1 PPG
2007-08: NPOY - Candace Parker 21.3 PPG, NSL - Amber Holt 27.4 PPG
2006-07: NPOY - Candace Parker 19.6 PPG, NSL - Carrie Moore 25.4 PPG
*** Jackie Stiles is currently the points leader in the history of the game but Never earned National Player of the year.. If breaking that record means anything...