Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
Did your step mother have speak of seeing a solicitor to make a Will?
I am afraid that the news is not good.
If there is no Will then the Intestacy Rules apply and the entire estate will pass to her biological children.
There is no way around this I am afraid - the timing of the remarriage and your father's subsequent death have no relevance so far as the law is concerned.
I am so very sorry
Please ask if you need further details
Do you have any idea which solicitor she might have used?