<human>: Give me the gist of the text in a nutshell

I tried to keep this short, but...difficult.

So I fell out with a best friend, N, after we'd signed a lease to live together a little less than a year ago. I think we both played a part in the demise, so I felt like I couldn't hold a grudge without addressing things. I apologized for my handling of things and explained what I did, but I never got an apology out of her, which I found unfair considering all of the things I'd heard she'd said about me after our fallout. We continued being distant and more talking behind backs ensued, but I let it all slide for the sake of our living situation.

Fast forward around eight months later, and I'm hearing of myself being brought up in an between N and a mutual friend, A. Basically, N said that the end of our friendship was my fault because I was too "stuck up" to accept her apologies or something along those lines. I'm enraged because I feel like she's too arrogant to understand that she made mistakes as well on top of the fact that she refuses to address things and would rather brush them aside. It's funny because N and A are no longer friends after a fallout they've just had where N refused to accept responsibility in anything she did as well.

I really want to confront her about her arrogant and self serving approach to her friendships, but I really haven't been involved in her life enough to know how to bring this up without it seeming like a vindictive attack. Any ideas on how to initiate this confrontation? I'm pretty terrible at these things.
<bot>: fell out with a friend/roommate last summer; kept up minor contact for living situation's sake; hear she's saying things about me that disregard her own faults and want to confront her but don't know how. help.