Story highlights Stephanie DeSimone alleges Saudi Arabia was aware of al Qaeda's plan to attack the US

Her husband, Patrick Dunn, was killed at the Pentagon on 9/11

Washington (CNN) Stephanie DeSimone was two months pregnant when her husband, Navy Cmdr. Patrick Dunn, was killed at the Pentagon on September 11, 2001.

Now, 15 years later -- and two days after Congress legally paved the way -- she's filed a lawsuit against Saudi Arabia, claiming the kingdom is partially responsible for his death.

In court documents filed Friday in Washington, D.C., DeSimone alleges Saudi Arabia provided material support to al Qaeda for more than a decade and was aware of the terror group's plan to attack the US.

"Absent the support provided by the Kingdom, al Qaeda would not have possessed the capacity to conceive, plan, and execute the September 11th attacks," the documents say.

The lawsuit alleges that the plaintiffs -- which include DeSimone's daughter -- suffered "severe and permanent personal injuries" and are seeking unspecified compensation.

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