Re: Distressed friend, need help.
OP, any updates on how she is now, and what has she decided to do ? 
Please keep in touch with her, keep encouraging her to not lose hope and have faith in Allah (swt). It was really depressing to read when you mentioned that:
If her parents are educated and sensible then she shouldn’t feel like that about them. But still, it is her decision as she is the BEST judge of her parents’ behavior/attitude. She has to overcome the depression and get out of it strongly in order to take necessary steps in dealing with this matter. For that she has to decide whom to take into confidence first. The person (mother/ father/ sister/ brother) whomever she trusts the MOST, and feels comfortable sharing it with, knowing that the person she selects would take the right steps sensibly in dealing with this matter and would remain in touch/support her throughout this painful time.
Tell her that there are many brothers and sisters here who are praying for her, and she is not alone.