What do you mean by ' I am being deputised' ? Do you mean that you, yourself, have been given an enduring power of attorney to deal with her affairs,on her behalf because she can't ? Or that somebody else has a power of attorney ?
The person holding an enduring power of attorney can apply for a statutory will.
So can : a beneficiary under an existing will
a person who would normally inherit if the person died without a will ['intestate']
any person whom the person , whose 'statutory will' it is to be, would be expected to provide for
any other person whom the court permits
It rather depends what the 'two years of unselfish support is' that you refer to. The court won't write a new will unless it's clear that that's what the person would or should have done , had they not been overcome by disability.It's not a case where they've never had a will.They knew the importance of a will. Why would they have made a gesture and what would it be ?
You need preliminary advice from a solicitor. It can be expensive to pursue such an application.We can't advise more on here without knowing all the circumstances.