The physical therapist is the specialist in muscle and movement that people go to about stretching exercises and to receive treatment for their recovery. The therapist will be able to provide the best exercises to facilitate and accelerate the recovery after an injury or an accident.
The <u>personal trainer</u> and <u>fitness manager</u> are good resources to develop general capacity and muscles, but they don't have medical training and don't have your medical file... so they might actually do you more harm than good.
The <u>nutritionist</u> will help you eat right, but cannot help you with your stretching.
Physical Therapists are licensed providers of care, and their educational education has evolved to the point where physical therapists graduate with a doctorate in physcal therapy. Personal trainers have a degree or a certificate. This is not the same.
The reason her grandfather might understand her father better than hers could be because it's his son. Her grandfather raised her father. Which could effect their communication.