Evaluate the valence intensity of the following sentence, considering the mental state of the author. Present a score between 0 and 1, where 0 denotes extremely negative and 1 denotes extremely positive.
Sentence: Beyond that, no one knew how they should proceed: everyone knew that saving the mills was important, but nobody stepped forward with a full-fledged plan to do it without losing huge amounts of money and dragging even more people down.