The records also say the Kelleys founded a cancer research charity in 2005 called the Doctor Kelley Cancer Foundation.

But in a telling 2008 federal tax return, the Kelleys' charity reported that it spent the exact same amount of money as it raised -- $157,000.

The charity's money paid for parties, transportation, legal bills and other administrative costs. There is no evidence any of the money was used for cancer research or caring for cancer patients.

Asked for the Kelleys' side of the story, a source close to the family told CNN the source didn't have enough information to respond.

For its part, the U.S. Central Command released a statement saying that Kelley has "no official position with U.S. Central Command. She is a volunteer and a private citizen, not an employee; because of this, and because there is an ongoing investigation, we have no additional information to provide."

Kelley and her husband, Scott, haven't talked to reporters. Earlier they released two sentences:

"We and our family have been friends with General Petraeus and his family for over five years. We respect his and his family's privacy and want the same for us and our three children."

More glimpses at the Kelleys come from a gossip column in 2010 in the Tampa Bay Times. It describes Petraeus and his wife arriving in a 28-cop motorcade to a pirate-themed party under a white tent on Jill and Scott Kelley's front lawn. High-profile partiers munched lamb and crab cakes.

Petraeus wore a tan baseball hat and an outfit that looked more suited for mall speed-walking than black-tie waltzing. Holly Petraeus, to whom he's been married for more than 37 years, posed for a photo with Kelley and her twin sister, Natalie Khawam.

Kelley was dedicated to helping host parties that benefited the military, local event planner Linda Baldwin told the Tampa Bay Times.

"Jill was such an awesome client," said Baldwin, the owner of Events by Amore, which catered the pirate party Petraeus attended. Kelley "did so much for the military, fabulous mother and amazing wife; can't say enough nice things about her. She never spared anything for the military. It was all about them."

Karyn Anjali is a longtime social and celebrity columnist for Tampa area high society magazine Panache Vue. She said she frequents many military functions as well as the celebrity affairs in the area. She told CNN she'd never heard of Kelley.

"I have no idea who she is. I have handled all the major events in this town for a long time now, and I am a little surprised I don't know her," Anjali said. "A lot of us go to the same places, the same restaurants for lunch, the same parties, the same functions. I myself am quite well-known, and I do not know her."

So far the only member of Kelley's family who has spoken to reporters is her brother David Khawam.

"My sister got anonymous e-mails," he told CNN affiliate KYW Philadelphia. "Because of her stature and her position, she was scared. She filed a complaint with the local authorities, and that trickled down to everything that's going on right now."

Kelley is a "dedicated mother, a dedicated wife," her brother added.

After that initial interview with the affiliate, Khawam refused to talk further and referred all media inquiries to Judy Smith, Washington's top scandal spinner who is said to have inspired the new television drama "Scandal."

Jill Kelley has retained Smith and top Washington lawyer Abbe Lowell, famous for representing clients such as disgraced former Sen. John Edwards and ex-lobbyist Jack Abramoff.

Regardless of who is talking, the scandal involving Kelley is growing by the hour.

The Pentagon said Tuesday that the investigation surrounding Petraeus and Broadwell has expanded to include Allen. Allen replaced Petraeus after he left that post to lead the CIA.

According to U.S. officials, the FBI has looked at between 20,000 and 30,000 pages of documents --- most of them e-mails --- and have found "potentially inappropriate" correspondence between Kelley and Allen.

Some of the e-mails between Allen and Kelley might be described as "flirtatious," according to a defense official who was cleared to speak to the media.

However, the official told CNN that flirtatious could mean anything from "Hey, you look good in that dress the other night" to something more serious.

"There was no security information exchanged. There was nothing hateful in the messages," the official said. "It was not threatening."