Yes, she can. Sonia has a sharp political brain and seems adept at springing surprises on the opposition in general elections. She commands the authority required to bring the Congress into battle-rea diness before 2014. She can use her populist ideas, such as the MNREGA, as a selling point.
Sonia Gandhi is the captain of a sinking ship called the Congress. She is not a leader of the masses and as the results of recent assembly elections reflect, she has not been able to revive the party anywhere. The performance of the UPA government is not something she can go to people with.