Hi Sir
Thanks for seeking help here.
After carefully reviewing your history I felt what the issues you mentioned here is not the full picture.
Seroquel is not a treatment of choice for unipolar depression. If doctor has suggested her for 6 months instead of ativan then definitely it's for sleep. Sleep is a issue in anxiey and depression.
The root cause of her illness should be addressed. She may have adjustment disorder because she is worried a lot for his father's health issues.
To be honest sir adjust disorder can be easily managed without medication. If she needs any Medication then it will highly temporary n for a brief period.
Next Steps
Let's have detail discussion about all these issues and finalize the management.
Health Tips
Do Regular Yoga and Regular Exercise like walking. Both can treat adjustment issues n depression.
happy to help you.