My mother died in 2009 and has an interest in the Willmington field (through her husband, my father, now deceased). We have a bit of money that Warren has had in suspense for a few years. They have given my sister all kinds of instructions during this two year period that she must do in order to transfer the interest and collect our money. I am thinking I can file a small estate affidavit, as we live in Texas and this mineral right is the only real or personal property we have in California. If I read correctly, we need to have an appraised amount for this mineral interest. How do I do that without spending lots of money? Is there another way to do this?