Yes you can start her with some Medication, from what I see her values are in place as she is not doing anything harmful thinking about her family. After medication she can go for a psychological treatment or counselling. What you can do is to support her and nudge here towards a psychiatrist.
Next Steps
Go to the Doctor first
Health Tips
If you see any sign of her harming herself talk to the family and others as soon as possible to make sure she is under their watch