Hello, my father passed away in May of this year; there was no will left. He is with AMP Superleader and he has a death benefit of around 40k. I don't know the amount of his superannuation; he told me once it wasn't much,and he doesn't own property. Anyway I cannot access his benefit/superannuation as I tried to apply for letter of administration and the probate office suggested my mother to apply for it, and since it was under 100k, I cannot apply for it as it will be knocked back by the supreme court as my mother was still married to my father at the time of his death. My mother has a mental condition,and can't comprehend things much and she needs assistance, so I need to know step by step what my mum and I need to do, and I can be by her side and tell her what she needs to do. Also the ATO needs a letter of administration regardless if my mother is married to my father or not...how can she lodge my father's last tax return? Please any help will be greatly appreciated. Thank you for your time.