The only American killed in an attack on the U.S. Embassy in Yemen was an 18-year-old high school senior who had gone overseas for an arranged marriage to a Yemeni man, her family and the State Department said.

The teen, Susan Elbaneh, went abroad last month and the couple were planning on returning to New York to live, her brother Ahmed Elbaneh said Wednesday.

They were at the embassy to fill out paperwork for her husband’s move. He was also killed in Wednesday’s attack.

“She was excited,” said Elbaneh, who described his sister as outgoing and helpful with many friends. A senior at Lackawanna High School near Buffalo, she was one of eight siblings, the youngest is 3, and part of a large extended family.

“She was second in command,” said Ahmed, the oldest brother.

Grieving relatives and friends gathered Wednesday at the family home in this former steel town known better now as the home of the “Lackawanna Six” for a group of Yemeni-American men imprisoned for traveling to an al-Qaida training camp in 2001.

Susan Elbaneh, who was born in the U.S. and raised in Lackawanna’s Yemeni community, was related to a seventh alleged member of the group, Jaber Elbaneh, who faces U.S. charges of providing material support to a foreign terrorist organization.

Relatives, however, stressed that has nothing to do with Susan, an innocent victim. They said neither she nor they have had any contact with Jaber Elbaneh, who was convicted in Yemen for planning attacks on oil installations and is in Yemeni custody.

Ahmed Elbaneh said his younger sister was not concerned about terrorism or violence before traveling to Yemen.

“She was just happy to get married,” he said.

A cousin, Shokey Elbaneh, said the young couple were outside the embassy, apparently waiting to be allowed in when the attack occurred.

They were among 16 people killed when militants linked to al-Qaida fired automatic weapons and set off grenades and a car bomb.

“Like the people killed in 9/11, people killed in terrorist attacks all over the place, we’re the same victims,” Shokey Elbaneh said.

Susan’s mother and another brother made the trip to Yemen but had not gone along to the embassy, relatives said.

The State Department confirmed the deaths Thursday.