Would you do this? (Please no rude comments)

So basically my grandfather has been married to my nana for a long time! They’ve been in my life since I was born. My grandfather is my dads dad. And my nana is my dads stepmom. Ok so back in 2012 my grandfather passed away from a very aggressive thyroid cancer. I was devastated, I loved him so incredibly much and it still hurts me. So since he passed away my nana hasn’t responded to me at all. I’ve called, texted, emailed, written, facebooked. Everything. We live in the same town. No response. My husband and I got married in 2016 and we sent her an invite, no response. Last year when we announced our pregnancy via Christmas cards, we left one for her at her door. No response. Were friends on Facebook, I know she sees my photos of my daughter, I know she’s seen my wedding photos. She also doesn’t respond to any of my other family members attempts to contact her. She let my dad and his brother know that their dad passed away by email. Even when he had just passed away, like within days, she didn’t answer my calls. I haven spoken to her since before he passed away. Now remember, she has been in my life since I was born, when my mom and dad got a divorce and we had no where to live, we lived with her and my grandfather(they were very well off) and they helped us. We spent every holiday together. Everything...she knows how much my grandfather meant to me...but I can’t even get a text saying at the very least to stop contacting her. So what I wanted to do was post a picture of my daughter(her great granddaughter) on her Facebook, to get her attention. Or should I just delete her and forget about trying anymore? I feel abandoned. I’m a grown woman and I do not need her I guess because I have my own life but she hurt me, and for her to not even acknowledge her great granddaughter pisses me off.

TIA for any advice.