<human>: Can you succinctly summarize the text in 1-3 sentences?

My mom and I typically keep conversations pretty short and to the point, nothing about emotions because I assume my mom wants to avoid speaking about her emotions. She made a comment today about how she wanted to deal with her dog's death on her own, without talking to anyone else. The weekend her dog died I was having a hard weekend from being broken up with, but all she informed me that weekend end was that her dog had died, and was very upset. I told her I'm sorry and if there is anything I can do to let me know. For about a week, I spoke with her, but she didn't once ask how I was doing, or what's going on in my life. 

Today when we talked, I asked her, "Do you think that is narcissistic?" Not in any condescending tone, just legitimately asking her if she thinks that? The conversation was all right until I requested that, she claimed I was attacking her, and then wouldn't let me speak. She was screaming at me, and I was getting emotionally escalated at this point, and I had an upset look on my face. She stated that I "always" get angry when we talk. Then I said, why do you get so offended when asked a question that isn't personal? She said, " Oh, so this is all about you know?" Then I hung up, because she always does this. Does anyone have any insight as to what my mom is displaying (personality wise), or why she always does this? What is the best way to respond to her?

She has since blocked me from Facebook, blocked me from calling or texting her, all because I asked her a question that challenged her thinking.
<bot>: How can I move forward, with communicating with her? And given the signs she is displaying is this related to a personality issue?.