At 13, considering she is playing multiple sports, she's obviously motivated but she may not have developed a love for a particular sport or position yet. There isn't anything wrong with that, nor does it indicate laziness. If she is happy, I would not push. I would support her wanting to play...
a 14u is not a young adult. I think all parents need to remember this. Some like to play for the camaraderie and are willing to sit on the bench, it's a sign of character, not laziness. However, I would not continue the lessons. I do agree that at 14, someone who is very serious about pitching...