I tried to get my ex-wife to go to counseling 3 times. She refused. She said nothing was wrong with the relationship.
I think what you are going to run into is that she will not agree to see a counselor until you're ready to divorce her. At which time it will emotionally be too late for you.
You can claim that 50% of the blame is yours, but if you're actively trying to help the relationship and go to counseling, then it's not 50% on your part. Ignoring issues, pretending they don't exist, and expecting a hollow marriage because that's what your parents had is really just stubborn and selfish behavior in action. I'm guessing that she's probably also passive-aggressive and the two of you don't sleep together very often.
Honestly, right now the best thing you can do for you is keep a daily diary of how things are going, how you feel, how she reacts to things. if you have a fight write it down before you embellish it in you head or dismiss it. You're going to want to go back over things when the relationship ends and see who did what, it's a good tool to have a written log of how you feel so that you really cannot sugar coat that things were not as bad as you thought.
Best advice I received while I was divorcing: "Your wife might absolutely utterly detest the color yellow. Can't stand it, can't be around it, it make her ill, and that's just how things are. But if that is the case, there's nothing you can do if you were born a canary and you just need to get out."
You may think the kids don't notice your relationship with your wife, but they do.
"Well, then," the Cat went on, "you see a dog growls when it's angry, and wags its tail when it's pleased. Now I growl when I'm pleased, and wag my tail when I'm angry. Therefore I'm mad."