I also battle to ask for what I need. But in your situation, I really think it's important to speak to your T. T's are very aware of personal space.
I had a situation in my last session where I was the most emotional I've ever been. I could physically feel my emotions. We sat in silence and T asked me what I needed then. That she was worried about me.
I had no answer. But I would have really liked her to come across and hug me. I just wasn't strong (Maybe 'brave'?) enough to ask for it.