A：No, I don't．
B：She's Tracy．She is my sister's friend．
B：Yes, my sister always tells me her things (事情)．I even(甚至)know her eating habits．
B：She likes milk and eggs for breakfast．She likes vegetables for lunch and fruit for dinner．
A：I think she eats well．
B：Yes, and she always plays tennis. We must learn from(向……学习) her.
A：OK. Let's meet at 5：00．
A．Who is she?