This is really difficult... well all i can say is whatever decision you take it has to be mutual.. i hope that the decision you took was hers as well because if not she must be really suffering.. family is important but the fact that you married her she is also a part of your family now... if she agrees to leave then leave.. but if she is suffering then i believe you must support her and better be with a decision she feel is right! as far as you both will agree on a certain decision things will be better!