*I want it to be understood by anyone reading this that I am posing a legitimate question in the title, as I only have a basic (and probably flawed) understanding of BPD. I don't post often So if the formatting is strange or if my flair is inaccurate, please forgive me.*

When my (16M) girlfriend (15F) and I first started dating 6 months ago, arguments were relatively uncommon and when she did have an episode during a disagreement, she would always make sure to apologize for the hurtful things she might have said. She always apologized with sincerity and was always willing to take responsibility. In recent months this has changed, 2 days is now an insanely long length to go without her becoming livid with me, we now typically go only 16-24 hours without an outburst. Where before, it was possible for her to be in the wrong partially or even completely, she is now completely innocent 100% of the time, she is not accountable or responsible for anything she says or does. I am now 100% of the cause of any problem, it is no longer possible for there to be a variable outside of my control.

I have not had an apology in at least several weeks and possibly as long as months. She has berated me until I was in tears on several occasions and will likely continue to. When I've tried communicating to her that some of the things that she does hurt me severely (ie. not saying "I love you too" when she's upset) she offers no consolement, apology or even a word regarding my feelings. She does listen when I tell her what hurts, This I know because she will no longer say "I love you too" at all while upset, anything that I've told her hurts me she now uses against me (ie. no eye contact, not looking in my direction, not letting me touch/ be close to her, silent treatment).

She now becomes virulent with me if I voice any negative feelings about her actions, she has broken most or all of the promises we have made when we began dating, yet I am still required to keep them. She will be angry with me about how my feelings made her feel. She will take out all of her frustrations on me. 

My mother once called my phone only to berate me and call me an idiot, I elected not to snap back at her. My girlfriend, who heard the call, then proceeded to give me the silent treatment accompanied by all of the aforementioned things I told her hurt me. Once her silent spell was broken and I had tears welling in my eyes, she berated me, saying I should have stood up for myself

No conflict between us will ever be resolved if I don't approach her and apologize in full sincerity and accept full responsibility. Even sometimes this won't be enough and she will remain angry with me for 1.5-2 straight days.

I understand that this post is probably long and confusing, but my mind is racing and I need to know, **Is this normal, or have I just been making excuses for her?**