It depends on if she thinks she can trust Obama to give her a pardon and make her rich somehow.
Can she trust Obama? Can she really really trust him? That is a tough question.
A pardon will get her out of jail but if Obama pardoned her now she is still not exempt from testifying and telling the truth in front of Congress or any court of law. If she tries that with a pardon in hand, then she is guilty of perjury or obstruction of justice.
All she can count on is Obama pardoning her at the end of his term, in January 2017. In the meantime, she will either keep her mouth shut and endure prison and humiliation or she will sing like a canary.
Nah, no-one can trust O. Not only does he lie at the drop of the hat, but also throws people under the bus without a care in the world.