Seveare depression. What to do now?

My wife is suffering from seveare depression and she also tried suicide at my home . Right now she is at her home . Her family members blaming me for the same . Right now she is under treatment of Goverment hospital but they dint informed to doctor about  their doctor her suicide attempt . She also threating me that she will commit suicide again and again. My in-laws made her house arrest but when i tried to approach her she refused to meet me and asking me that she is not able to me and soon she will commit suicide. We also have six months female baby . Now i am too much concern about my daughter and her life . She is unable to understand me and in-law are forcing her to away from me . As she is suffering from sevear depression so she need my attention , love and moral support . Her dr. also advice me that i should give her moral support but how can i give until she is not with me ? . Kindly suggest me as soon as possible, what to do now ? How i concel her and how i win her belief .