I don't post a lot but I am a big lurker. I am pregnant with my 2nd child and am looking for some feedback. I have a really long backstory with my ILS that dates back to 8 years ago when my husband and I got married. Everything has been amplified by having kids as I feared it would.
Just to give some idea of our relationship, there really isn't any "fighting" with them. Just a lot of passive aggressive behavior on my MILs part. Extremely controlling, my way or the highway type of woman. My husband is the oldest and the favorite child. She doesn't really get along with her own daughter. My FIL is very sweet and easy to get along with. When we were first married most of the issues my husband and I argued over had to do with the frequency of our visits with them. They live about 4 hours away so when we saw them, which was usually at least once a month at my MILs insistence, it was for an entire weekend. They would come Friday morning while my husband was at work and leave very late Sunday night. I felt like this was very intrusive. My husband works very long hours and weekends were our only alone time together. When you add in spending time with friends and the occasional monthly visit/dinner with my family ( 40 min away) I just felt this was too much. I didn't tell my husband how much I disliked his mother at this point just let him know I felt like it was overkill. I'm not sure if my feelings would have been different if my motherinlaw wasn't so difficult. I don't think seeing someone's family once a month is too much but mainly because it was the whole weekend.
We really had a lot of nasty blowout fights over the years about them. My husband isn't scared to stand up to his parents at all but I didn't want him to call his mother out on her behaviors mainly because I knew it would make the situation worse. I didn't really want to deal with it like that. I just thought if we put our boundaries in place and saw them less there wouldn't really have to be "fighting" . I just figured I couldn't change a malicious 60 yr old lady and as long as we worked it out together she didn't need to know I didn't like her and create more tension.
Fast forward to my first child being born, they drove out immediately and waited in the private waiting room ( have no idea how they got in) and listened to me give birth with their ears up against the door. Busted into my room afterwards and literally sat with us all day. Then the next day came and they sat with us from 9am to 9pm. Brought their laptops in and all their meals and it was so awful. I hate myself for not asking them to leave. I always put myself in other peoples shoes. I remember thinking, they just want to see their first grand baby. I never want to be a "bitch". My mil asked to come stay with us and "help" after the baby was born I don't know why but somehow felt like i owed this to her or felt like I was supposed to do this. It was the worst week of my life. She didn't speak to me, told My husband And my own mother all the things I was doing wrong and just made me feel awful in my own home. She went out to eat without me and didn't bring me anything home and really didn't clean or help me. It was awkward and from this moment I haven't had much of a relationship with her. I do realize that this was my fault by allowing this to happen.
My child is 2 now and she acts like grandmother of the year and her and my father inlaw act very entitled to my child. She is constantly in a competition with me or my mother trying to make my child like her more. It is very odd. Obviously I realize this woman has issues but I can't ever bring myself to buck up and just tell her to back off. I am about to have my second child and dream about how I can keep them away. I had pretty severe post partum depression after my first child was born. I see a therapist and she believes that my MIL is a huge trigger for my anxiety and I should try to assert myself more. I just hate the whole idea of confrontation. I know most people would think what is the big deal, stop being a pushover. I just hate the position I would out my husband in and just everybody. I try to put myself in his shoes. At the end of the day it's his mother. I would hate if he fought with mine. I also want my daughter to have relationships with her grandparents but I feel they are totally innapproriate in their expectations with her ( another long story) .
I guess I'm curious how you deal with visitors after birth and things. It seems like so many people enjoy their families being around after. I'm thinking maybe it's me with a problem. Also, how often do you see your out of town inlaw and what are their roles with your children? I can't stop being angry at them for putting me in this position in the first place. Part of me is always pissed at them for not seeing how intrusive they are, they have no concept of giving people space and letting their children live their own lives. I realize that I continued to let it happen so I probably F'd myself already.

Re: Inlaw issues
I see my inlaws about once a month and they live an hour away. I'd be happy to see them more often it involved babysitting. If it were me, I'd look forward to their monthly visits as an opportunity to take off for the day. As for their disparaging remarks, it's an opportunity to role model for your kids how to respond to bullies. A polite smile and non defensive comment (to each her own) helps kids to see that everyone always has an opinion whether right or wrong. But you can't do any of this if you're always trying to see things from their point of view. And if you're not presenting your point of view, then your kids will only see your inlaws pov.
A random piece of advice: if you're ever at a loss about how to stick up for yourself, just give a polite smile and leave the room. With the kids if they're there. That doesn't cover every situation, but no response, i.e., not engaging them, serves many purposes and always sends the right message.
You can stand up for yourself without confronting anyone, which may be what's getting in your way. Just don't deal with it. Your husband can be responsible for telling her she's being pushy or rude.