Great post, Aaronsmom!
Re: the psychiatrist, she must not have concluded that Holmes was a threat to himself or others.
I don't know what her records suggest about Holmes' mental status, but the following was learned in the Charles Whitman case.
According to the book, A Sniper In The Tower by Gary M. Lavergne, five months previous to the actual event, Whitman told a psychiatrist that "he often thought about 'going on the top of the U of Tx. tower with a deer rifle and shoot people'". The psychiatrist had heard many references to the tower before and he "interpreted it as a 'transient feeling' or an expression of depression common among students." He didn't think Whitman was dangerous, but asked him to return the following week. Whitman never returned.
"Minutes after Charlie Whitman left his office, Dr. Maurice Dean Heatly recorded notes on the session. He had no idea that the document numbered 8009, would become the most scrutinized document of his career and that it would change his life forever."