if your friend wants to terminate the matrimonial knot, then,
she is advised to try to settle the matter amicably with the husband involving elders/relatives/friends etc and go for Mutual Consent Divorce which will be decided in 6-18 months, and both will be free to live life with the wish,
(i know that the efforts for MCD fails earlier)
don't forget to draft an MOU before approaching Mutual Divorce, which is the most essential and important part of a Divorce case,
some basic points to keep in mind and put in writing through an MOU before filing the petition for mutual consent divorce are custody of kids, distribution of assets (movable/immovable), quash/withdraw of pending litigation if any, Maintenance (present/future), Alimony, mode and time of making the payment, streedhan, future litigation, etc.
if failed, you are advised to file/claim
Domestic Violence case/maintenance case (for causing mental, emotional, physical and monetary abuse, etc)
you have rights to claim residence, protection, compensation, maintenance,
if you do not want to opt the divorce presently, you can ask for judicial separation also,
You can also file a contested divorce on the grounds of mental cruelty, beatings, character assassination, etc but it will take many years,
You can Call/mail for a detailed discussion/understanding