Whether or not you inherit anything from your great grandmother's estate depends upon whether or not she has a Will or trust naming you as a beneficary of her estate. If not, you then have to process her estate through your state's intestacy proceedings and whether you inherit under it depends upon if you are one of the closest related surviving heirs to her under state law. I suggest that you consult with a Wills and trust attorney in your locality. One can be found on attorneypages.com.