Three yrs since death and all sibling have agreed to allow me to handle matters.
you need to consult a probate attorney in the county where she died or owned land on the procedural options.
Why do you state the Will is not valid? If the named person declined and no one else is named, as long as your mother wasnt married at death you should be able to seek to be appointed. You should consult local probate counsel.
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Contracts / Agreements Lawyer
Although you will be better served by seeking counsel to handle this matter, you can file a petition seeking your appointment as PR and the other children can decline to serve. Good luck!
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