I just checked, and he discusses this on p. 98f. Here's what he says:
On July 25, April Glaspie went to the Iraqi foreign ministry to deliver to Tariq Aziz a copy of a statement made earlier in the week by the State Department spokesperson, Margaret Tutwiler. . .Shortly after she returned. . .she was summoned back. . .to meet Saddam himself. This was unprecedented. During the two years she had been ambassador, Saddam had never held a private meeting with her. . .The one-on-one meeting with Saddam was fateful for Ambassador Glaspie. . .I was with her immediately after the meeting and had several discussions in the few days between the meeting and her departure from the country on a long-planned leave.
If Glaspie had a one-on-one meeting with Saddam, that was a major mistake on her part. She should have at least taken someone along as a notetaker. No wonder there are conflicting accounts of who said what to whom.