When a bad memory haunts you and you've got nowhere to run or hide, what do you do?

Hi, Few days back my closest friend talked very harshly, and even didnt trusted me what i told her. Now she acts like nothing had happen, but that incident hurts me a lot everyday everytime. I dont want to talk with her till i loose my temper and even i dont want to hurt her. What should i do? Should i take her calls or disconnect them?