She may have a different personality type from you...
In the MyersBriggs Personality Types, one aspect is that in dealing with the outside world, do you prefer to get things decided or do you prefer to stay open to new information and options? This is called Judging (J) or Perceiving (P). If your friend is a perceiver, then she may not prefer to have all her plans made ahead of time.
I like to have things decided.
I appear to be task oriented.
I like to make lists of things to do.
I like to get my work done before playing.
I plan work to avoid rushing just before a deadline.
Sometimes I focus so much on the goal that I miss new information.
I like to stay open to respond to whatever happens.
I appear to be loose and casual. I like to keep plans to a minimum.
I like to approach work as play or mix work and play.
I work in bursts of energy.
I am stimulated by an approaching deadline.
Sometimes I stay open to new information so long I miss making decisions when they are needed.