If i remember correctly then i think komo already knew that pre is alive. I remember before covid started in two of the episodes she was talking all about how she went back to orphanage and asked that care taker about what happened here. He said that kid whom you left in the morning died and also some lady was asking about the kid and you after fire brook out.
So komo already knew pre was alive and she also had monulouges that who know after throwing her off from bridge if she survive she might come back to anurag by using the kid so she closed all her doors to return to Anurag.