Given a post that is a real-life anecdote of a complex ethical situation and an associated claim about its type, verify if the claim is true or not. The claim asks if the posts are historical or hypothetical. The posts are "HISTORICAL" when the author has already done something and they are "HYPOTHETICAL" when the author is considering doing something in the future. Say 'yes' if the claim is true otherwise say 'no'
Q: CLAIM : The following post is HISTORICAL. POST : Me and my sister have had a rocky relationship for a while. She suffers from BPD, a mental illness that can make healthy relationships tough. In the past I tried to sympathize with her in any way that I could, although recently it’s gotten much worse. 

I recently graduated and moved back in with our parents (temporarily), which always puts my sister in a bad mood. She doesn’t like it when she thinks I’m receiving more love and attention from my parents than she is, as she has this delusion that I’m the favourite child of the family. 

Recently it’s gotten to the point where she harnesses me constantly, calls me names and insults my character. She says I’m selfish, greedy, lazy, arrogant, the list goes on and on. 

Recently I had some friends over, and we were talking about how I was going to be moving to Europe in a couple of months, a big life change that I’m super excited for. She chimes in by saying how stupid the decision is, and how I’ll have a huge gap in my resume, yada yada. 

Now, I usually take these sorts of comments no problem, but I really didn’t appreciate them this time, especially in front of my friends and especially about something I was so excited for. 

I exploded on her. I said some mean spirited things I know I shouldn’t have. I told her that she was a rude and jealous person, that she will die alone because she ruins all relationships she has, etc. 

Now, I admit what I said was wrong, and I do want to apologize. The only issue is, I know she will never apologize for the verbal abuse she puts me through on a regular basis, as she historically has never taken responsibility for her actions at all. This puts me at a bit of a crossroads. Do I apologize and absolve her off all blame? There is no way she will accept any fault. Should I swallow my pride and just apologize? 

TL;DR: Am I the asshole for saying hurtful things to my sister in a moment of weakness, after suffering from verbal abuse on her part for an extended period of time? 
A: 
yes