You got turned down by her three times already and you still haven’t learned, have you?
The kanji means chastise but the verb vocab version is to learn by experience. I guess these are kind of similar. When you make a mistake, someone will chastise you, and then you will learn by experience (either via the experience or via the chastising).
As a child (こ) you got a lot of chastising, I bet. A lot of learning by experience (of chastising).