All those behaviours which you had mentioned could be due to various reasons..
Maybe, she is thinking or blocked her mind with few thoughts which is troubling her or affecting her.
Next Steps
On her behalf, fix an appointment with a therapist for her to share her feelings and pains which she could have undergone in the past..
Health Tips
For more details you can reach me by using the link given below :-
https://prac.to/hema-sampath-psychologist-dir