It's rude to abruptly cut someone out of your life.
Ann has a friend who has always been a detrimental influence and lately is becoming more difficult to deal with.
Ann wants to separate from her friend.
Ann is upfront about her intentions and slowly distances herself from the friend.
Ann cuts her friend out of her life and deletes her from social media.
Ann's friend understands the consequences of her behavior.
Ann's friend thinks she did nothing wrong and that Ann is a bad friend.