Your mother died 10 years ago and you continued to live in the house that she willed to you and your siblings you cotinued to pay NJ property taxes As executrix you never changed the deed Is this frau?

No. Technically, the deed does not have to be changed, because a will is an instrument of transfer. Just as a deed transfers property from a living person, a will transfers property from a deceased person. In many cases, estate deeds are made but that is only to confirm the transfer in the deed records. As long as your living in te house has been open to the other co-owners, there is no problem.