<human>: Let me start off by saying I have never felt this way with her before. I feel in between enraged and choking back tears, and im wondering if I am overreacting by being feeling like this.

So finals are around the corner and her finals end a few days earlier than mine. She asks me if I want to hangout on the day after her last final is done and I decline because I still have to study for mine. She then starts acting all sad and shit so I offered to eat lunch with her on that day, then im going to study afterwards. She refused my offer and (pretended?) to get more sad even though it kind of felt like the typical joking she always does. 

Anyways I ask her to come with me to go buy a coffee from the coffee shop down the street and shes coming up with all these bullshit excuses like its cold, she needs to study, she doesnt want anything. So my "best friend" can't spare 10 minutes of her precious time to walk with me to get coffee and a quick bite to eat. Okay. We start walking through campus and she continues to refuse my requests and continuously pointing out and reminding me of my answer when she asked to hangout earlier. After reaching the library, she continues walking while im in the middle of talking to her which was extremely rude. Im left standing there confused and furious. Do I have a right to be mad? Am I being selfish, controlling and childish?

Summarize the given text in a few sentences.
<bot>: Best friend" wont walk with me to get some food because I refused her offer to hangout. Continues walking while im in the middle of talking to her. Do I have the right to be mad?