I'm looking for a book I read in the late 80s about a society that communicated only through telepathy. The main character was a female in her teens. In the beginning her mom had a baby and 'reached out' to it telepathically, baby could not respond so it was killed. The girl was an outcast because she kept a wall up preventing others from communicating with her. She met a humanoid 'alien' whose craft had crashed and he was instrumental imin her seeing the truth of the tests her society put forth for their teensteens' rights of passage. Any ideas would be appreciated!
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