Task: Analyze the valence intensity exhibited in the sentence, assigning a score on a continuum from 0 (extremely negative) to 1 (extremely positive), capturing the emotional context conveyed.
Sentence: I realized that Rachel had disappeared without leaving a clue and I had no way to do anything but wait for her to show up – which, if she were in a situation where I should be doing something, would probably be never.
Intensity score: 