How to help?

Okay so my friend had a miscarriage at the start of the year and conceived again a month or so later. Well ever since she got pregnant again she’s bitter to all other pregnant women and I’m sure she talks behind my back as well. If they don’t do something the way she’d do it then she has something to say about them, I understand miscarriages are hard but I just don’t know how to help her out of this pregnant woman hate phase.