Question

When the speaker writes she is "more or less insane," she implies that _____. she has a short temper she is confused about the war commercialized war makes her furious she is as irrational as world wars?

Answer 1

"commercialized war makes her furious" is the correct answer to this question

Answer 2

She implies that she has a short temper.
People who has a short temper has a higher tendency to conduct emotional outburst over small things/problems.
Because of this, other people who had normal temper tend to see them as irrational  or insane.