Marriage/Divorce

Got married @ 1 NOV 2019, my spouse hided/not informed her major health issue(fibroid) even her family members before marriage and with a week we came to know the truth, they started story like we came to know that few weeks before marriage only so we hided it, even doctor says it there possibly from a log period of time. Finally got major surgery done on first week of JUN of 2020. after that she went to her parents home and not returned yet, when try to contact them they are behaving weirdly for no major reason. Her father is i will send my daughter when i want to send don't contact us till then. What to do in this case ? its a clear cheating because of this incident I loosed my believe of marriage itself. even my parents are in tears worried about my life. They are are not even ready to discuss at-least not sure what is their intention . Is there a provision to dismiss this marriage from court decree ? or Do I need to go for Divorce ? In case of divorce is she eligible for alimony ?, even in case where she cheated whole our family actually by hiding the truth. What to do if they go extreme peaks of lie, like telling we are torturing her or asking dowry etc. because even without no major reason they are behaving like this if I send a divorce notice they may claim false allegation on me how to get rid of this false allegation. If am really of torturing her or asking dowry why should I admit her to hospital in my name. Thanks in advance