The answer is the cognitive map. It is a sort of mental portrayal which serves a person to gain, code, store, review, and disentangle data about the relative areas and properties of marvels in their ordinary or allegorical spatial condition. The idea was presented by Edward Tolman in 1948
Denial, she is looking for the best case scenario (she thinks she has exactly a year to live even if it might be less) and she is avoiding facing that she may not be able to do this in a few months, she could be too ill, etc.
Trees require more moisture because unlike other plants they must have way for transporting mineral nutrient as relatively great distant from their roots to their leaves.
