She is one of my best teacher.
She is eager to teach, looking for nice topic always, and she is very clever. I don't know why some peeple said, she has bad habits.
Even if it was true, She already improved all. She is still 21 years old and I beleave she has potential to be the No.1 teacher at QQ. Anyway please try to take her lesson and enjoy talking with her, then please judge by yourself. Thanks.