My friend knew she went beyond the line, but she never had any respect for acknowledging any line whatsoever! I’d tell her, ‘Whatever thought pops into your head is what blurts out your mouth.’ She refused to hold anything back saying that’s who she is and she won’t tolerate “walking on eggshells” with me (as though I was way too sensitive). The things I let her get away with saying and didn’t get mad are astounding. The line she finally crossed was just way too far beyond what anyone would have allowed.

But, it seems you had a pretty healthy relationship with your friend until this fallout. She wanted to vent about her husband and you said you didn’t want to hear it. She must have not liked having her source of listener cut off and boundary set, so she went off on you in anger- yes, narcissistic.