Oops, My System Steals Everything!

Vivian Lawson has lived for twenty years as the daughter of the richest family in the city. The daughter actually born to that family is Julia Miller, swapped out as a newborn. The swap costs Julia her name, her inheritance and, in the end, her life. Vivian and Julia's own boyfriend kill her together, and she learns the truth about her birth only as she is dying. She comes back to life with something called the Stealing System bound to her. Its first act is to move every coin in Vivian's accounts into Julia's. Further powers open up after that, the theft of luck and of people, and Julia uses each as it arrives. Vivian tries to get at her at an auction house, and Julia takes more from her there. The next attempt is at a hotel.