2 possible outcomes after Sonia Gandhi's official resignation

New Delhi : Congress interim chief Sonia Gandhi has notified her party members to find a replacement as she wants to move forward and leave her post. She has asked the party members to find a "full-time, visible president" and a sweeping overhaul of the organisation including elections.
Here are the two possible outcomes if she goes out:
1: If Sonia Gandhi decided to quit and Rahul Gandhi stays adamant on not taking the chief post then she will remain the interim chief till party completes the process to elect a non-Gandhi president for the party.
2: Sonia Gandhi resigns, and Rahul Gandhi agrees to return as the chief of Congress. He had resigned from the post last year, but change in decision can re-elect him.