Sister in law is bullying me. UPDATE!!!

He ladies, im 30 weeks pregnant and just cant deal with this anymore. My sister in law has been causing nothing but emotional trauma in my life for the past week. It started a week ago when she attacked my sister and my family publicly online. She basically told them she thinks they are bitches and that they were purposely not including her in planning my baby shower. I tried to clear the air and was quite nice to her despite her insulting my family and embarassing them publicly online for everyone to see. Wheb presented with the truth, she was unwilling to listen. She then started blaming my family for doing speeches at my wedding and making her look like an idiot for not doing one. Well i basically told her i no longer want to be part of the drama between her and my family because it hurts me. She then said she wasnt responsible for my feelings and i just ignored her. I then recieved this message at 12:30am while i was asleep and i cant help but be extremely hurt by it. She is clearly going through something mentally. This was also my response. Im going to block her, but what do i do after that. I feel horrible for mt husband that his sister is treating me this way and hes caught in the middle.

Here is my response and yes i corrected myself *brothers wife*

UPDATE:

so last night my husband sat down with his mom and brother to discuss what happened. Apparently this is a pattern of behaviour for my SIL. She did this exact same thing to my brother in laws wife a few years ago and unfortunately its never been resolved, they are only civil for the sake of the kids.

Apparently my sister in law uses her children as bargaining chips with my mother in law. If my mother in law doesnt side with her, she removes her children from my mother in laws life. Right now, clearly there is some mental health issues going on, so those kids need some stability and my mother in law is that rock for them. My husband and i agree its not fair for my mother in law to get involved because the kids are the most important thing. With that being said, we also made it clear that if my mother in law feeds in to the delusions and/or doesnt stand up for the truth, then there will be a problem.. so its best for her to set boundaries with my aister in law to not discuss any of this at all and we also wont discuss anything with her so she can stay neutral.

I got a call from my brother in law after and he said some really nice things. Said he loved me and that hes happy i married his brother. What was being said about me is not true and hes appalled and he might end up getting himself involved if this continues. I told him he doesnt have to at all.

My husband and i have both said our parts to his sister and she is now blocked on everything and has no way to contact us. My family has also blocked her. We decided to just push her out of our lives and try and forget about it and ignore her.