<human>: A couple of weeks ago, I decided to remove my childhood friend of 6+ years on all social media. Our friendship slowly began to decline over the summer after graduating high school and things only got worse when she began to get into bad things (drugs, partying) and was bragging about them to me for fun. I'm starting college soon and figured I didn't need her in my life if she was becoming a bad influence. 

As the days passed, I noticed she unfollowed me as well on several social media sites. So she obviously took the hint that I do not want to talk to her anymore and noticed I am trying to distance myself. However, I just now noticed a message request from her on Facebook asking me what she did wrong and if I'm mad at her. I certainly do not want to repair the relationship and continue being her friend, but I did randomly disappear a few weeks ago.

What would you do in my situation? Do I owe her any sort of response/closure? Or should I just delete the message and block her entirely?

Can you condense the text into three sentences or less?
<bot>: Friend who I stopped contact with seemed to get the point at first, but is now asking me what she did wrong and if I'm mad at her. Do I respond at all or let it go?