As what Penelope saw in her flashback with the 'system', in the past life, Yvonne was still a manipulative leila and brainwashed evryone and penelope, who saw thru her lies was onto her and wanted to expose her. So Yvonne turned everyone against her and made her die. With her gone and everyone brainwashed, Yvonne brought freed all leila and rule of terror started n world was in shambles. Vinter in past life broke thru the brainwash too late and saw the destruction leilas have caused to the world and travelled a lot to turn back time so that the world can be saved this time around

IM FUCKING HOOKEDD WHAT HAPPENED IN THE PASTTT WINTER U HAVE MY HEART OH THIS POOR GUY