Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first.
What is it that you wish to know?
I am so sorry for your loss but sadly this man has not broken any laws in his callous failure to notify you of her passing.
I am sorry as whilst what he has done is not illegal it was callous in the extreme
Please ask if you need further details
Sadly that was for your mother to decide.
I am afraid that it is for the man she was married to do deal with the financial issues arising from her death.
You can certainly contact the Coroner in the area in which she died and ask for a copy of the Death Certificate - but I am afraid that there is no other action that you can take