I need emotional support

So I just broke off a friendship because the other person overreacts to everything I do... For some reason I feel guilty about it and I just can't get it off my mind. Like I feel like nothing without her but the thing is they ay she treats me and blames me for everything I just needed a week away ROM her but she said that I was saying goodbye forever. We were like close friends and did everything together but now I just lost my best friend and this is the second time I lost a best friend, I'm tired of it but my best friend from kindergarten moved and now this friend treated me like crap... Should I feel guilty that I broke off our friendship?