She has always claimed that her bosses knew more than they said publicly. She and a number of other TWA employees quit the company in protest of this fact hiding.
If you want to read a fascinating novel based around the Flight 800 Tragedy, try Nelson DeMille's Nightfall. The main characters are a retired NYPD detective and his FBI agent wife, who was a part of the original investigation team. On the fifth anniversary of the explosion, she is meeting with family members of some of the victims and stumbles upon a possible lead in the case. They eventually track down this lead, which will blow the investigation wide open and stun the world. But they first have to pit themselves against a rogue CIA agent (or ex-agent, depending on which of his stories you want to believe) who'd helped bury the evidence five years earlier and will do anything to keep the secret from coming to the light of day.
My uncle was one of the lead mechanics for TWA and says no way was it a center fuel tank explosion.