Don’t know what to do!Rant

Not sure where to post!

Back story first!

I’m 29 & my husband is 44. I have a 9yr old,he has a 20 & 18 yr old and then we have a 3 month old together she is was born in October, Been together for 6yrs & married for 4yrs.

His ex wife cheated and crushed his world and disowned their son.

His children don’t like me or my son, his daughter won’t talk to him and refused to meet her little sister. Both the older two have no respect for any of us. They like to tell us what we’re doing as if their the parents and we still show them respect, don’t yell or swear or scream at them we try talking etc.

To us the children come first and if it comes down to it, we will seperate if the kids arnt happy. I have tried sticking it out for the past 6 yrs with all the abuse I get from them (with my husband sticking up for me) getting called a two faced bitch, lair,unfair the list goes on. I get in shit for smiling and saying hello I get in shit for not talking at all. I can’t win.

Let’s bring us to the last couple of days!

I was away the the 2 younger ones and came home to being abused from the step son AGAIN and always does it when my husband isn’t home and then lies.

I’ve told my husband and step son. That I’ve had enough- I’m broken and I don’t want the younger two in such a toxic house I’ll be moving out! Well the stepson lost it at me for that as well. Saying is such a horrible person for having a kid to his father then walking out and that I planned this!

I don’t know what to do anymore! I don’t want to be the reason my husband doesn’t see his older two. But I can’t keep living in this house. I have postnatal depression. My husband works night shift 6days a week. So I’m stuck with crap everyday and have been for the past 6yrs.

I feel like everything is my fault and no matter what I do it’s just going to hurt everyone and make it worse!

I’ve got a evil stepmum I don’t all to my dad etc so I know what’s its like and I’ve never tried to be his mum just a friend but we do have rules in our house for the younger two.

Am I being weak and unfair for wanting to leave like he is saying so- or should I stay and put up with it and fake it until he chooses to move out in the next 12 months +