Good luck! There really isn't anything to lose by trying to reconnect.

I had a best friend who was also my cousin throughout grade school and into high school. Then for some reason she got angry with me. I never knew why. I do know that I was a difficult person in high school so it very well could have been my fault. She never spoke to me again.

And 40 years pass.

I became FB friends with her sisters, my other cousins that I had not seen for many, many years. However, they are not very active on FB. I sent a friend request to my long lost friend and cousin. I sent a message along with saying that I know I was difficult in high school but that people change, would she be interesting in reconnecting? I never got a response to the message or the friend request. Oh well. I eventually withdrew the friend request.