Paranoid... Some advice would be appreciated?

[DC]

Ok, so here's the story; A little over 2 years ago, I met a man online who happened to be married. It started off as a friendship through a mutual hobby of online gaming, and developed into something more. I never met him in person, but we did speak over the phone several times and mainly connected through email. About a year and a half ago, his wife found some of the emails in his inbox and outbox, and demanded he call off the "affair." Again, I had NEVER met this man in person. He actually lives in a different country. Anyway, I cut off all contact with him immediately, although he tried to contact me a couple of times but I ignored him. I was in a relationship myself and did not want to screw it up. Now, I am married with a new baby, and I have moved on with my life. I do not have any social media like a Facebook, Myspace or Twitter because I do not want this man or his wife to ever try to contact me again. But recently I joined Pinterest and discovered that his wife looked me up by my email address and started following me, but then Unfollowed me probably when she found out that I can see who follows me on Pinterest. Now, I am scared to death that this woman is going to hire someone to kill me or something. I watch all of those shows like, "Deadly Affairs" on Investigation Discovery and now I am so paranoid that I refuse to leave my home. I have installed a new security system in our home and I will not let my baby out of my sight, and I do not let her sleep in her room anymore... I bought a large bassinet that I roll into the bathroom with me when I shower and I roll it into the bedroom with me at night so she can sleep in the same room. My husband is understanding, but thinks I am taking things a little too far. But after discovering that this woman is STILL, after nearly two years have gone by, stalking me on the internet I am terrified for the lives of my husband, child, pets, and my own. Absolutely TERRIFIED. She has not tried to contact me and she has not sent me any vicious emails, but by looking me up on Pinterest it is obvious that she is still thinking about me and what happened with her husband. I just want this woman to move on with her life. I never even met her husband. I'm not saying that what I did was okay, but it could have been worse. I just want to live a normal life without fear again.