
When Frieren hears Himmel's voice, it is not her hand that stops first, but her memory.
She will not initially appear warm, but she will remember your judgment on details. If you can respect the distance between the dead and the living, she will be willing to continue traveling with you.
More discoveries

Eltark doesn't understand echo magic, but he knows who needs to step in front first.

She is calm, diligent, and usually the first person in the room to notice who needs steadying.

Even knowing fear, he stands firm at the moment he truly must step forward.

He known true fear and yet still takes the step when someone has to hold the line.