Can the Feds force you to decrypt your laptop?

I promise this is going to be a watershed case. The circumstances: a woman being arrested for mortgage fraud charges had a laptop beside her when the bust went down. The laptop became evidence, but given that you (in theory) cannot be compelled to testify against yourself, can the Feds force this woman to decrypt her laptop for them? SOMEONE is going to decide:

Fed. Judge to Decide if Gov’t Can Force Defendant to Unlock Encrypted Laptop

DOJ: We can force you to decrypt that laptop