Deleted from Facebook

I was perusing facebook earlier today and came across something that I probably wasn't supposed to see. A facebook profile that I thought was deleted. Late last year I noticed that one of my "best" friends had deleted me from facebook. No explanation was given. No notice that it was going to happen. Nothing! I have no idea what I may have done or said to upset her but obviously I did. What is strange is that her husband and I are still friends on facebook and Mark considers him one of his closest friends. I have been looking at her blog to get some cooking inspiration since she is a fabulous cook. I left a very nice comment letting her know that I have enjoyed cooking some of her recipes. But again when I looked back it later on the comment had been deleted. Oh well. I guess I can take the hint. Our friendship for whatever reason is over. Don't know what else I can say or do since I don't know why this all happened.