Is there any rules about relationship with your wife?

We found out about 3 years ago that she had a lump in her breast. She will NOT eat any English medicine, I tried really hard to help her get better, she just wanted Homeopathy medicine. time passed by and the lump in her breast was making its way out form the skin, the doctors said that they have to do a mastectomy, they did that and for 3 months she was abit better, then she visited India, (but she did not tell her mother or father about the cancer and the operation). She told me not to tell anyone. I didnt. After she came back from India she become very weak and was rushed to the hospital. The doctors said the cancer has spread and that she must have 6 chemotherapy or we can take her home. we had no idea what to do etc, we did what the doctors told us, after the 6th chemo in mar 2016 she was home and getting weaker and weaker, i had bought numerous herbal medicines and seen several doctors. But it was too late, She requested if her mother could come to see her but she said what will i do if i came to see her? we are in Europe and parents in India. In Nov last year she passed away. we have 2 children, i am completely devastated by this, i am still in day 1 mode after she passed away, its over 79 days, i am trying to find Waheguru and ask Him why he did this? Why did He take my wife away and why did He not take me? My children have become orphans and we have to go other peoples houses to have dinner, I do cook sometimes but its hard, I have to bear with these people and their criticisms, i am completely fed up. We go to the Gurudwara regularly and I am so upset with myself that i feel guilty that we ended up in the house every night and didnt go to the Gurudwara that much, my wife never said anything, she didn't complain about anything, weather, work, going out to eat, parties, money problems anything, she just carried and on 1 or 2 occasions she did say something if she was unhappy with something, but thats it. I was sick too and had had 3 epileptic fits, and several fainting episodes, she was always at my rescue, I feel so guilty that i could do nothing to save her, but i also found several medicine remedies that she didnt take, sometimes i think there was too much medicine and no one to impose a procedure. I am slowly finding Waheguru and trying to make it easy for my kids to accept a sure and happy life, without all the chasing etc, I cannot mend my heart and i dont know how to do it. I need help that is all i know. My children miss their mother alot but ... (more)