Before the two find out that she's listening to their conversation, Lunari immediately leaves and rides the elevator. She knows that soon, Penelope will find out that she listened to their conversation through the surveillance team and who knows what the woman will do to her knowing what she has done to her own daughter.
Lunari knows where exactly the kids are kept and she must go there now. This is the right time to make things right. She must let Pharis know about everything she found out so far although she might hate her because she took part in this project.
She thought that even if she dies today, it will be okay because until the end, she has done everything for the people she loves.
When she got out of the elevator and reached the ground floor, a lot of employees greeted her but she just gave them an awkward smile. The employees find it unusual to see her like this because she's the type of person who greets everyone.