You can end up in legal quandary where you fight over exactly what NDA can and cannot cover. Congressional Subpoena would put her on much firmer legal standing. My guess is her lawyers recommended this strategy.
> You can end up in legal quandary where you fight over exactly what NDA can and cannot cover. Congressional Subpoena would put her on much firmer legal standing
A corporate NDA cannot prevent you from cooperating with a Congressional hearing.
A corporate NDA cannot prevent you from cooperating with a Congressional hearing.