she is so unhappy with you that she attempted suicide. it is the last step to give up life which is so precious. all of whom she is related and loved will go through so much of pain had she died … only you could stop it. work out for the best solution with the help of counsellors and respected elder members. good she is alive she can rebuild her life.. allow her do so .. . you do not be the cause of her death.. litigations/ guilt will make your life more miserable.
why is she so unhappy? why is she making you unhappy? to save yourself from problems is secondary. think about avoiding problems?? give her some peaceful time to heal her emotional injuries… be courteous and part with respect..