What are your thoughts on my best friend who betrayed me do you believe she is a narcissist?

So I founded out that my now ex best friend betrayed me behind my back and dated a guy I told her that I had a crush on for years and her excuse was something wrong I did when I was a teenager and I couldn't express my feelings healthy and maturely. I believe she scapegoated me and bullied me behind my back cause she had a secret animosity and was envious of me when I tried to comfort her she was playing she was giving me the silent treatment and liked the fact that I was hurt and confused like I could see it in her face that she was enjoying it. I tried to protect myself by not answering on her calls cause she was acting weird and she used it as proof that I was abusive and she was the victim. I tried to talk with my other friends but it seemed to me that they had the role of the messenger, they weren't telling me what was going on. When I finally confront her that she sold me for the guy cause I know what the f she is (a h*e) she froze and her little smile disappeared that's when the reality hit her and she wanted to talk things out she cryed she brought her mom who screamed at me that I was being jealous hateful and that her little girl was innocent that I am the one who was the problem cause I didn't want communicate with her when in reality she didn't want to communicate with me. She then acted like a baby who was confused she was asking questions such as "I don't know why are you treating me like this" and faked her crying while she had a smile in her face. It was clear to me that she was playing innocent went she wasn't the situation ended with her leaving with her mom while I got isolated confused and heartbroken. I have no problem taking accountability for my actions by based on her behavior I believe she used my past mistake to justify her betrayal to hide her envy to bully me and basically to emotionally abuse me. It's been years since then and she still talk about it like I was fake and she leveled up and found true friends while she still stalks me.

What are your thoughts on my best friend who betrayed me do you believe she is a narcissist?
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