Someone already mentioned this, but I just want to reiterate. I think you should completely block her from whatever site you're using. Make it so you can't see any of her posts ever. I'd suggest your boyfriend do the same. I don't see a problem with you just blocking anyone who wants to get involved in her drama and help her lash out at you. Just keep ignoring it. The people who love you will understand. The people who blame you don't matter. Luckily, you and your boyfriend can support each other through this.

Just keep your head up and try to refocus your thoughts when you start to get on the runaway vindictive train. Negative thoughts like that are a lot of energy! Energy I'm sure you'd rather be putting else where