Questions: Girl's Behavior

Hi, I’m a shy studious guy aged 20. And there’s a beautiful lady teacher at my college aged 30, unmarried. At first i didn’t had any feelings for her. Then I started noticing, that she was getting nice and frank with me. Like are you bunking classes? It’s okay, I’m fine with it. Seeking approval, wanting me to stay pleased with her. Sometimes talking more sweetly than my mother did. She gave me undivided attention, without even blinking eyes. Not even my best friends gave me that level of attention. I started developing feelings. Whenever she saw me, she gave me an intense eye contact stare, which was intimidating sometimes. And when I try to run away, she stops me and tries to initiate a conversation which can be as dumb as, what is the time? even though she’s wearing a watch. Every single time she sees me, she find ways to talk to me.

One day, I came to her instead and initiated by saying I want to ask few things about the home work, she replied with high anger and disgust that not now, come later. She almost screamed on me. From that day she started behaving weird and irritated, don’t know why. Some other day, she screamed on me again saying your work is incomplete, you might get fail/backlog. Again one day she avoided me saying I’m busy, come later. Since then she’s always been very angry with me saying it’s not my responsibility to remind you to complete your work on time, while you are just chilling here and there. I then left the college for some reasons. We never saw each other after that.

I just have two questions:
Q1) Did she had feelings for me?
Q2) Why did she started behaving angrily with me?

Obviously this one isn’t likely able to be lived in but it’s just cute! And makes me wish I had a tree house! Lol!

There have been 3 different shows, usually comedians, that she was planning to see over the course of 2 or 3 months. She bought 2 tickets to these shows at various venues in different cities, and since we went on our date (s), she's been selling the tickets off last minute. Now mind you, this is a woman who has portrayed herself to me as single. A single woman buying sets of 2 tickets.

She's not a scalper, because she's selling the tickets at a major discount.

I guess I'm just wondering if this chick went on our dates and decided to scrap her other relationship over me... Am I reading too much into this? Is this normal feminine behavior?