Just upset.

So I had a miscarriage at 15 weeks with mono/mono twins on March 28th 2018. I was public about my pregnancy and my loss. I received tons of love and support from friends and family. With that being said, there was a girl who I went to school with and was kinda friends with who had an early loss at around 6 weeks, a few months later. Well ever since her loss she has made snide comments and Facebook posts about me, she never names me but when I or a mutual friend we have question her about it she deletes all the posts. She has made comments about me getting more attention than her and how I don’t deserve any support. I am pregnant again with my rainbow baby and she saw me at one of my appointments (my OBs office is inside the hospital) and she got very angry and left the waiting room when she saw me. When I announced my pregnancy she mentioned that she saw me at my appointment and that she was happy for me. But then she made a post about ‘people’ being undeserving of having children and that it was unfair. I understand being upset with infertility and child loss but I don’t understand why she is specifically mad at me. I get the hurt feelings but I would never say anything like she says constantly. I deleted and blocked her but my friends send me multiple screenshots of what she posts and I think someone is showing her my page. Sorry for such the long post but I’m just trying to enjoy my pregnancy and this just really bothers me. Why do you all think she does this? And what else should I do because I don’t want to have to delete everyone that could be showing her.