She was keeping a mental note of all your ‘offenses’ to throw in your face when provoked. The lesson learned is to stay away from people who do this. True friends and loving people don’t do this.
A good question to ask yourself is why you gravitated to that friendship and continued to maintain it.
After reading every psych article on here, I steer clear of anything like that and anything that has to do with control. Just walk away. I’m not sorry I have since done that. I suffered great wrath for doing it, too. But not sorry in the long run.