Warranty deed problem

[Chelle Knijnenburg]

The question is - which type of lawyer is needed to handle this...... My father lives in Florida. He and my brother bought a 2B2B SFH house in the 90's with both their names on the deed and mortgage. It's not appreciated much and my father took a few loans out against it. My brother has moved out and my father married a woman who had him add her name to the Warranty Deed. It reads that she and her heirs (my three step sisters living in North Carolina, Florida and Penna) own one half undivided interest in the property forever. This cost her $10.00. Does my father even own his half of the house anymore?

None of the step sisters want this property.  My father realizes he made a mistake and is afraid that now my brother has to come up with one-half the house value in order to move into the house when my brother retires or my father passes. He is in his 80's.

Do the sisters sign Quitclaim deeds to release their right of ownership? 

Here is the monkey wrench- the wife has dementia and is very paranoid, although it has not been officially diagnosed. It has to do with lack of money. Do my father and brother need a real estate attorney or an elder care attorney or ?