How did they get onto her computer? Installing software on someones computer or HACKING it, without their knowlege or concent is a FEDERAL CRIME.....
So, what I want to know Mr. RIAA folks.. is how the hell do you know what is on this computer in the first place? Seems to me any "evidence" you have is fruit of the poison tree.
They wouldn't have to. They could use the peer-to-peer download software to determine the IP address of the computer, then backtrack the address to the user's internet service provider, who they would subpoena for the identity of the user with the lease on that IP address at the time in question.