I don't know how your DD reacts, by I know mine seemed to get much more from a closely won game. Don't get me wrong... 10 strike outs and only 2 walks is an excellent pitching performance! But my DD always seemed like she wanted more of a "fight" from her opponent. Please read on:
Pitching is a VERY difficult craft to master. The endless hours required to achieve a college level pitching ability is GUARANTEED to often be drudgery - especially for a teen! We often had to poke and prod to keep DD on track. The GOAL in her mind was crystal clear - it was just the seemingly endless steps required to get there that was often discouraging. Our job as parents is figuring out if it's TRULY your DD's dream, and NOT ours - then figure out a way to guide our DD through that maze, while walking on eggs! No one can tell YOU exactly how to do this with your own daughter - that's the "fun" part!!
We constantly reminded our DD to keep her vision of what SHE wanted, NOT what mom & dad wants. Keep her focused on the thrill she gets when she's out there in the circle with a 1 - 0 lead, 10th inning, 2-outs, batter with full count - last batter. Sure she hates the lessons and endless practices. But every pitcher lives to be in the circle with the ball in her hand when the game is on the line! Being in the pressure cooker is what makes them tick!