sale of inherited property

I apologize for the length of this post but here goes:

My mother was executor on her mothers estate.  She passed before probate was completed and sale of grandmothers property was completed.  After my mother passed my uncle took over probate of grandmothers estate and sold property which was split between four beneficiaries.  I received a check for my portion of the estate and was required to establish an estate, probate my moms estate and they required me to file for an EIN.  Since the sale I have not recieved a 1098 or K-1 from the abstract company, broker, or buyer of said property.  I need to know if i need to file taxes on the monies received.  I live in Texas  Property was sold in Oklahoma  This is the first and only income the estate will have and is valued under $25,000  Help??