Clashing/Disagreeing with In-Laws

Ive got into it once with his mother(&father) Ok, maybe twice. Theyre very vindictive people and will trck you into saying something then use it against you. If they dont like what you say or something youve done, theyll make it a whole family affair. They are very annoying. A silimilar stuaton has happened with his sister as well. They dont let down, but sometimes can be good at acting like nothing is wrong. everything is fine now, but they know now that im pretty good at having an opinion, and they have to respect my wishes and respect my SO. I dont like to baby them.. i dont feel sorry for them and my SO is starting to realize that, they used to bully him ect, so im happy hes starting to stand his ground as well. Bleh, inlaws! lol

    if my MIL has something to say, that's great, she can say it all she wants, but by now i'm sure she does not to expect me or my husband to listen to her. he will agrue with her occassionally, mostly if she has said something nasty about me. i'd be lying if i said she never pissed me off, but i refuse to argue with that ding bat. she lives out of state so i just stop answering her calls. i didnt talk to her for a year once b/c she couldnt be polite to me when we spoke.

I have a less than usuall MIL situation, my MIL lives in Peru and doesnt speak English. I have only been down to visit twice (both times for 2-4 months at a time). My Spanish is fine at a relaxed tempo, somethings I just don't understand. And sometimes I pretend I dont understand and just ignore her. We've never gotten into it really, she's made some slights at me but I shrug them off and pretend like I don't understand what she's getting at. I highly doubt she thinks I'm as daft as I sometimes pretend to be. And I have had an interesting confrontation with some random person at a town party (really she was not so random as the town is so damn small that everyone knows everyone and has for DECADES, just that she was random to me, my husband would probably be able to tell you how she's related to him though) over my daughter's hair not being completely done up before misa (mass) started. Its one of those crazy parties that lasts 5 days and begins with mass at 8 with the fun begining immediately after and festivities that last til nearly dawn (Peruvians can party). I told her my husband had been completely ready to go for nearly 20 minutes as I got myself and my daughter dressed and ready, it would have been great if he would have helped out but he didn't. The lady, whoever she was, was rather opinionated and I heard her ragging on other people about other things, and while I'm not sure if she complained about my husband's lazy wife to others after that, she never brought anything up with me again and never within my earshot, though I wouldnt have known if she switched to Quechuan to talk shit about me infront of me but behind my back.

Within the next year my MIL will be moving to the states to live with us. She's great with kids and loves them dearly but I can't help but worry that the living situation may bring on some tension.