Hi,
Probably you can address her apprehensions in a rational manner and helping her to reduce the emotional anxiety. You can start doing it with small or minor things to feel the differences and results. This would help her to make up her mind in a better way after few repeated attempts.
Next Steps
You can discuss with professionals than diagnosing it by yourself
Health Tips
(1) Make her productive (2) Have general and casual conversations to reduce her anxiety (3) Deal with rational questions with due respect to her emotions