I want to describe a person's position who is sitting next to another one on the bench, but her body is not in a parallel form with him and she has turned her upper body to somewhere opposite in a way that her back is visible to that person, not her face.
As you can find in above, it is very long to describe; I want a word or a short phrase to describe this position.
Best Answer
There's no one word or short phrase that will capture all that. If the posture is deliberate, that intent may be expressed by the verb snub or cold-shoulder—but neither expresses a physical posture, only a pointed refusal to engage.
Here are some possible ways of expressing the posture—the first group are neutral with respect to intent, the second express a deliberate snub:
But this is all 'way over in writers.se territory.