Story highlights One of Hillary Clinton's top aides is caught in the center of a probe into the nominee's emails

The FBI is investigating thousands of emails found on a laptop Huma Abedin

(CNN) Huma Abedin, Hillary Clinton's longtime confidant, headlined a fundraiser for the Clinton campaign Thursday night in Washington, DC, her first appearance since the FBI's announced last week that it was investigating thousands of emails found on a laptop that belonged to her estranged husband, Anthony Weiner.

Abedin was joined at the event by famed designer Diane Von Furstenberg and Vogue editor-in-chief Anna Wintour.

Normally a constant presence by Clinton's side for much of the campaign, Abedin has been off the campaign trail for five days.

A Clinton aide said Tuesday that Abedin was working from the campaign headquarters in Brooklyn.

Asked if she is staying away from the campaign plane because of the optics, the aide demurred.

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