A little adversity & being challenged for playing time might not be such a bad thing. It could either tell her that maybe this not really what I'm after, or be a motivating factor and she decides to step it up a notch. Once the thought of failure kicks in the drive to succeed should kick in as well. My DD has been challenged & passed over since she started playing because she is so small. Since she was 12 (and I quit coaching her) she took it upon herself to do the extra work. She's 15 now & hits, throws, and lifts all on her own. Yesterday she stayed after practice with coach for an extra 20 minutes just to field grounders. I have no doubt this is what she wants to do. My boy on the other hand not so much, and I'm cool with that. He plays football, and would just show up for games if he could lol.