Will Princess Ivanka and Prince Jared of Kushner both be going to jail too ?

The short answer is no, they won't. Nor will Trump Jr. When Mueller gets too close to the truth, or if they are accused of a crime, Trump will pardon them all for any crimes, past or present. He has the authority to do that and keep them out of jail. And have no doubt that he will. He may even pardon himself, which has never been done and would set off a constitutional crisis. The man has no shame.