My father in law has been deceased for several years. My mother in law recently deceased. I am a widow of their only son. What are my rights?

The answer depends on whether either in-law had a will and what the document(s) provided. If there was no will, then upon the mother-in-law's death, her estate would likely pass by operation of law to her siblings, and if none, then to her nieces/nephews. Gerry Wendrovsky, Esq.- Upper West Side Estate Lawyer www.upperwestsidelawyer.com