I hope I'm wrong and this is just something I've wondered as watching the same things. I don't know that she still loves basketball. Maybe and hopefully I'm wrong.
But women are different in men as far as what they want and when. They have a (stomp, stomp) biological clock that can change what they want/need in a very short time. As someone who loved baseball and just played basketball I can tell you its something you can't control. As a guy with a late growth spurt I went from 5'11 as a freshman to 6'5 as a sophomore. That change caused something to click, then I loved basketball. I remember my basketball coach saying he wish he could get out of me what the baseball coach got, but it's something you can't control.
When you absolutely love it you have that next gear that you can't imitate, you either have it or you don't, again I hope I'm wrong but I've seen her have trouble catching that next gear this season. Hopefully she's just been feeling her way to her roll with this completely different team.