Hated Annie
I'll admit that by the end of the film she was more tolerable, but her character at the beginning was so objectionable, I couldn't completely warm to her. I know she was under a lot of stress following the accident, and it is possible to say that her decision to go to Montana was motivated by desperation to help her daughter, but it seems to me that it was more about her anger at not being in control of the people and situations around her life. She was mostly just acting out of self interest and selfishness rather than love and compassion. When she shouted at her husband "I don't care what all the doctor's and professionals say about my daughter's recovery, I know best" (or words to that effect) that nailed it for me - she was mainly driven by her ego and the people around her were peripheral to her own life script, to be shaped in the image she painted for them in her head. She confirmed that later when talking to Grace about why she pushes her to do things.
Her behaviour at the ranch continued like that for quite a while too, making it harder to believe in the 'transformation' that she went through by the end.
Grace was great, a really sympathetic character, and Redford dependably engaging, but Annie's character drove a wedge between me and this film. Not really my cup of tea anyway, I'll admit, but a pity an otherwise solid film was spoiled further by that.