Do you think I'm crazy

I have been with my partner for 9 years, we have a 8 year old and I am currently pregnant. We never get privacy with my mil, she is the type of person that turns everything back on you and makes you feel crazy. Recently we had a miscarriage before my current pregnancy and I found out my partner cheated on me. Not only was I going through grief, my life was turned upside down. My mil took it upon herself to interrogate me on why my partner had been staying elsewhere, I told her I didn't want to talk about it with her. As always she pulled the "well your mum isn't here so I'm all you have". Eventually I told her as I just wanted her to leave and stop staring me down awkwardly. The response I got was "well I had a high sex drive when I was younger, why arent you fulfilling his needs". My mum is alive but she has been a absent parent for a long time and mil loves playing this against me. Fast forward to the present myself and my partner are still doing counselling and we are in a good place. I got news that my nanny who raised me was in hospital, she caught covid for the first time and had pneumonia, my mum had said that the doctors didnt think she would make it. My partner (he's close with my nanny) and I dropped everything to go to the hospital and be there with her. She pulled through but I wanted to spend an extra few weeks with her and help care for her, my partner made the same choice. Not only my mil but my bil were constantly calling us telling my partner how he was a let down and useless as they were in the middle of feeding calves (have shears in a farming business) Now we have found out that my nanny actually has cancer and has been very unwell. My partners poppa also was diagnosed, we both went to our families and supported them. I also went and seen his poppa for his last months and helped care for him, all his family including mil and bil took off work etc. Sadly he passed, my nanny is still alive but refusing to take her morphine she is in immense pain. We still receive nasty comments and judgement from his family for going to visit her. Anyway we have finally agreed that we are going to buy a house in the same town where my family is. Mil decided that she would invite everyone else but myself and my partner to six 60 on my birthday, has been turning other family against us resulting in my partner getting daily calls putting down the town and people where we are looking to move. She has turned my partners brothers against him. Mil offered to pick up my son from school when he got home he was so upset hyper ventilating, I asked what had happened and he said Nanna told me your taking me away (we hadnt told him yet) from everyone and that no one is allowed to come and see us. Absolutely not true! Then she goes one step further and tells everyone about my miscarriage and that I'm not right in the head and that everyone should convince my partner that I'm mentally ill. I'm so hurt, she has upset me my son and my partner, no remorse what so ever. When I do see her next I feel that I'm gonna lose my shit and she will use that against me because I'm crazy 🤪