I am a female by the way

There is a girl I always admired she is 4 years older than me

I always looked up to her and thought she was amazing: beautiful, intelligent, hard working etc

When I saw her in Facebook I was scared to add her
However, I decided to add her and send a message saying "congratulation on your graduation " - she ignored me and after a long request rejected my add. I did not have a profile picture at the time but I had my name and we had a mutual friend. I was shocked so I added her again but she rejected me again.

I was confused but moved on with my life. I met her a year later as I was asked by her mum to be aseobi for wedding and I said yes. I met her and she was friendly and smiling, and tried to hug me but I was friendly and smiling but did not really hug as I felt why should I hug someone that doesn't think.I'm worthy enough to be their friend on Facebook. My mum asked her.if she knew.me and she said yes...

Anyways, I moved on and gave her benefit of doubt, its not by force to accept someone in facebook. I was aseobi at her wedding.
I later sent her another message on Facebook saying hello Mrs ademola, how are you? And she replied "all is well. You?" I said fine and she did not reply again.. No thank you for taking the day off work/school and sewing clothes to be aseobi, she sounded so blunt

I did not contact her again for a few years.. But then someone close to me died and because she also went through a similar thing a long time ago I sent her a message saying what happened to me "hi, my sister died etc.." She saw the message and just did not reply.

What did I did to deserve this from my role.model? She seems wicked.

Oh I'm very sorry for what happened. It's difficult to know exactly her reason/s for ignorance you. Send her another message telling her that she is or was your role model and what is/are exactly the reason/s for being like she is to you (if you aren't afraid). If you do want to do this, then start to not to think about her and your emotion towards her will fade away through time.