Who are you (or her) to determine whether your children have presented an "accurate interpretation" of what's happening in your house? It's how they feel and how they are perceiving their home. It just IS.

If you want them to perceive something different, then something different needs to occur, not another counselor, another period of time where at the end the SAME thing is going on.

You said above that you can't really afford counseling for yourself - so why are you going to take her to counseling? It's a waste. If there's a counselor to be employed here, it should be one for you ONLY.

And stop discussing your adult problems with your children (adult or not). Just the fact that your oldest took siblings to counseling tells me you are unable to see how they're being affected by your marital discord. It's sad.

Save your children first, then save yourself. You are the adult here, fix this.