Is my ex a narcissist

Long story short, my ex stole $400 from me, always begged me for things and then gave me nothing but anger and hate when I’d do things for her because they “weren’t good enough”. She would never do anything for me in return, and would insult everything about me. Both of her parents are raging narcissists and she has confided with me she’s afraid she’ll inherit their narcissism and deeply rooted self hatred. Well a few days ago I broke up with her because I told her I couldn’t handle the constant negativity anymore, and yesterday she stole more money from my card, unblocked me, and when I still didn’t say anything she started spam calling me. When I answered she was all happy like nothing had happened, talked about missing me and how we should have sex again. I didn’t really respond or give into it, so eventually she hung up. Later she called me and said she hated me and thanks for all the love and the money, but I’ll never be hearing from her again. The next morning I told her I had finally seen through her love bombing and her manipulation and I understood some things about her now I hadn’t realized before. And that it would be best if we never talked again like she said. She responded by begging me to stop messaging her and that I need to never contact her or her family again (super extreme out of nowhere I feel like) and that she already found someone else who makes her way happier than I did. Wtf did I do here to warrant this? Am I dealing with a narcissist or am I completely delusional and ignorant to details I left out of the story??? What do you guys think.