rwby5 spoilers

props to Yang Xiao Long

she figured out immediately who the real Spring Maiden was and what had happened to the last one just from context clues (and presumably figured out what happened to Cinder based on the sounds of fighting while she was falling - it was enough to shake the ground upstairs, so Yang definitely heard that)

she stared down her birth mother, the Spring Maiden, the woman who left her and she still doesn’t know why, and convinced her to give up the Relic

Yang emerged from the Vault alone, with one arm, carrying the Relic of Knowledge. Yang won Haven