Ms. Holtzman testified at an unusual nine-day closed-door hearing in the case and offered her own interpretation of the events.
It was reported that if the witness were to testify, it could be in a closed-door hearing for safety reasons.
A week later the House Appropriations Committee held their closed-door hearing.
The questioning is expected to continue in another closed-door hearing on Wednesday.
The first session of this two-day closed-door hearing in a hotel lasted nearly nine hours.
"I don't want to talk about the closed-door hearings."
"Senator, the truth is I wouldn't think of asking you to divulge what goes on in closed-door hearings."
European Union regulators and Microsoft sat down for three days of closed-door hearings this month.
It was the one used for closed-door hearings, and was swept daily for bugs.
And within weeks, what would have been a closed-door disciplinary hearing about the near-fatal incident was thrown into the public spotlight.