My wife having dipression and insomnia​

Hello, The brief description provided by you here is highly suggestive of a depressive episode. However it would be unwise to comment further about the precise nature of problem. However what can and must be said is that it is definitely correct that she needs help. You should consult with a psychiatrist near you at the earliest. Most worrying aspect of your description are the suicidal ideation and she must be attended to at the earliest. In the meantime be supportive and be around her most of the time and keep talking to her. Do not let her feel lonely.. such small steps and gestures can go a long way in helping her and you.. Best wishes for your health and future.. once again I would strongly recommend that she and you meet a psychiatrist near you at the earliest..