She repeatedly sobbed during her testimony, which lasted less than an hour.
Justice Scalia rejected the testimony, which he called crucial to the plaintiffs' case.
The Elysée had earlier leaked a truncated version of other confidential testimony which supported its case.
His testimony, which has not been made public, was obtained by The New York Times.
Dr. Arden's testimony, which came first, provided a jarring start to the proceedings.
The Treasury declined to comment on the testimony, which is to continue today.
Nor should doctors' expert testimony, which is subject to error, be considered decisive.
The wild card may be Professor Touretzky's testimony, which Judge Jackson said was "extremely persuasive".
Speer's widow's testimony, which was moving, and her presence may have played a role as well.
Instead, they relied solely on victims' testimony, which was rarely forthcoming and not maintained.
Mr. Yaacoub's testimony, which began here on Wednesday, has provided an unusual look inside the operations of the secretive group.
