Light Chaser by Peter F. Hamilton & Gareth L. Powell
2021’s Light Chaser novella is a collaboration between Gareth Powell and Peter F. Hamilton. This fast-paced story actually spans centuries, featuring a functionally-immortal woman, Amahle. The sole occupant of her AI controlled lightship, Amahle, the titular Light Chaser, is one of many of her kind, who travel a “circuit” of human-occupied planets, collecting the memory collars selected families wear for generations. In return, Amahle provides carefully chosen wealth and trinkets, careful never to provide something that might allow the stable (or stagnant) societies on these worlds to make any kind of leap forward in technology or political thinking.