Hi Max151
Yes it is worth sending in reports from three years ago. Make sure that even if you answer a question and say her condition is unchanged, make sure that you give the details of how her condition affects her against the criteria. I would also consider adding a letter from you and/or another relative who has intimate knowledge of her daily living and how her brain injury affects her.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems