Mark Blaine (Chillblaine) attempts to convince Team Flash to use the Consciousness Restoration Chamber (CRC) to bring back either Caitlin or Frost, which would effectively "erase" Snow.
By the end of the episode, the new entity decides she wants to live her own life and chooses the name Khione , after a flower her father, Thomas Snow, once studied.
The Flash Season 9, Episode 2, 'Hear No Evil' Recap & Spoilers