Neon Yang's space opera "Waiting on a Bright Moon" is a Tor.com Original short story

Xin is an ansible, using her song magic to connect the originworld of the Imperial Authority and its far-flung colonies— a role that is forced upon magically-gifted women "of a certain closeness". When a dead body comes through her portal at a time of growing rebellion, Xin is drawn deep into a station-wide conspiracy along with Ouyang Suqing, one of the station's mysterious, high-ranking starmages
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