Jim, stop being a lawyer for a second! You are very much complicating things.
You want to get out of the friend zone. very simple. You want a romantic intimate relationship. Is doesn't matter how she perceives it. You know you aren't getting it. She could spin things all over the place. Doesn't matter. You are going to have to walk away if she is not going to restore that. And she needs to go to IC to restore it. There. That's it.
You have repeated NUMEROUS times how she is behaving. We get it. Is "behaving" enough?
The one odd office trip she made, or shopping next door to OM, that isn't your issue here.
One step at a time. What is your number one issue? That's what you address. Nothing else. Because you both have this ability to have these very wordy relationship conversations that just go in circles. You want intimacy restored? Is that your number one issue. You tell her in a very succinct matter. And if you can't get a succinct answer that is clear, then you need to be ready to walk away.