The likelihood that you are going to receive anything sixteen years after your mother's death is not good. You should consult with a probate attorney about your situation.
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Why did you wait so long? Consult with a NY probate attorney but the statute of limitation and/or the practical chance to recover anything has probably long since passed.
This is not legal advice nor intended to create an attorney-client relationship. The information provided here is informational in nature only. This attorney may not be licensed in the jurisdiction which you have a question about so the answer could be only general in nature. Visit Steve Zelinger's website: http://www.stevenzelinger.com/