That she calls him. That she needs to talk, not just about Peter but about everything, the unreality of her new life. The paradox that although he's totally broken and breaks off the conversation, there is a raw reality in the way he talks to her which wasn't there in their few burdened conversations near the end of s1.

I couldn't agree more and loved the scene for the same reasons. It was so poignant how much their relationship has changed if you compare this interaction with their awkward encounters in S1. He is the only person she has left who she can talk to, who knows about her powers since Noah clearly doesn't want her to acknowledge them. And now after she finally accepted her power, after she realized that this is who she really is, it must be so hard for her to suppress that. It also really shook me the way Nathan flinched when she begged him not to hang up and when she said she couldn't do this anymore he wanted her to clarify. He seemed so torn between his desire to push her away because it pained him too much and not wanting her to feel so lost. I really hope we see more of them but I'm suspecting that West is going to fill that role for her soon.

Meanwhile, Nathan and Angela are also fascinating to watch, only in an even darker way.

Their confrontation was the most powerful scene of the episode for me. It's amazing how much pain and anger Adrian can convey without raising his voice once.