I'm not going to bother keeping a friendship
Can you explain why you no longer want to be friends.
I don't have any interest in being friends with this person.
You should make an effort to reconcile with your friend. Your friend should also make an effort. You may regret cutting this relationship off in the future if you don't put in the effort now.
I'm not going to put in a lot of work for a friend that is not making an effort. I don't do anywhere near as much as she does for me.
I am sorry she doesn't invest as much effort as you do. You deserve to make friends who are interested in you genuinely.