 Nina is able to communicate to William; in the season 1 finale, she arranged for Olivia to be taken to the parallel universe to meet him, while in the season 2 finale, she alerted William to the plan to rescue Peter.After Bell's death, Walter is left in control of Massive Dynamic, but chooses to leave the majority of the control day-to-day workings of the company with Nina.She later becomes his confidant during his despair at having possibly caused the universe to unravel.