The blues are fine at Winterpark. Pretty much like all other Colorado resort blues and black diamonds at Vail.
I believe it's the Olympia Chair that serves just about all levels of Blue runs. Their is a fair amount of Blues by the Eskimo lift but it's more popular. Though you'll probably want to take Eskimo to get to the runs off of Olympic.
You can take her to the Mary Jane side, but if you don't watch out you'll be in some serious bumps. Pretty easy to avoid though. On a nice day take her up the Panoramic lift. Great views and intermediate terrain bowl riding. All of the runs there funnel into other intermediate terrain. There are runs that go through the trees, so again pick your lines wisely and it's easy to do. Sunnyside lift serves a bunch of intermediate runs too. The bitch is that you either want to take the Mary Jane run to get to the base which is an aggressive intermediate run, Corona way, which is a flat bitch if you can't hold your speed, or loop around back to the Winterpark side. Which just takes a lot of time.