SUBREDDIT: r/relationships
TITLE: Should I [18F] respond to my former best friend's [19F] email?
POST: My former best friend (we had been good friends for about 2 years) [19F] emailed me [18F] this morning saying that I crossed her mind and that she wanted to know how I was doing. We have not spoken since the end of May because we had a huge fight. She was responsible for breaking my ex-boyfriend and I up, and then she decided to take him to the prom last year without telling me. She has done many other things like this, and is kind of a compulsive liar. I kept quiet for a long time, but last May I finally decided to stand up for myself, hence the end of the friendship. We ended on bad terms (something I  don't ordinarily like to do), and I do not know whether or not to respond. In all honesty, I had no intention of ever speaking to this girl again, but some of my friends believe I should respond so that we can be on good terms with each other. What does reddit think I should do?
TL;DR: 
Former best friend emailed me after not talking for several months. This girl has caused problems for me in the past, but friends say we should reconcile so we can be on good terms. What to do?