Mother in laws...

Does anyone else not like their mother in law? I personally don't like my mother in law at all. She annoys me and she's up my husbands butt 24/7. Not to mention that my husbands brother is 13 and that kid is the biggest nuisances on this planet. The way he eats is disgusting.. Chews with his mouth open and eats excessive amounts of food. My mother in law plans to come 3 days before I have the baby and I'm not looking forward to it..most of you will probably ask why I don't like her.. Simple she's overly attached to my husband. Texts him all day, calls him constantly.. And she tries to make herself the victim. She came to my mom's house because her house is disgusting and while we were about to have lunch I told her that my step father was coming home for lunch and she got upset and grabbed her bra(she takes her bra off 24/7) and walked to the bathroom to put it on while making the comment that maybe eventually she will be able to eat soon. To make things worse she has no car, so we have to drive 30 mins from my moms house (we're here on vacation) to her house and drive back to my mom's house. Then she has to sit up front because she gets car sick sitting in the back.. Having to stop 3 times to get her cigarettes and sweets from the store on the way to my mom's.. Ughhhh she annoys me.