From your narration it can be observed that you had been living a very hard life with her with full of tortures and torments.
Many married life have turned sour and unpleasant due to the elders interference especially from the girl side.
They are not bothered about spoiling their daughter's life or future but they will be hell bent to satisfy their sadistic pleasures.
Most of the time the victim is poor husband.
Once the parties have separated and the separation has continued for a sufficient length of time and one of them can present a petition for divorce.
It can well be presumed that the marriage has broken down. Once the marriage has broken down beyond repair, it would be harmful to society and injurious to the interests of the parties.
Desertion and cruelty are continuous wrongs. What could begin is a disagreement, may turn into friction, only to transform itself into conflict.
Therefore, each day would give a fresh cause of action to the wronged spouse.
Desertion by a spouse who persistently refuses to return to the marital home, so that other spouse has grounds for divorce. such position also terms as OBSTINATE DESERTION.
However you can have remedy by filing a divorce case on the grounds of cruelty and desertion.