Under the laws of all states in this country, if you are on legal title to a portion of land where there is no trust, only you can agree to have that land sold. As such, if you are not yet on title to the land that you are writing about, the wife of your father may be able to sell it. I suggest you consult with a Wills and trust attorney about your matter as soon as pososble. One can be found on attorneypages.com.