If your father is in complete control of the real estate, then it is he who needs to protect his interest, which in turn protects your 'intended' interest should he pass; 100% ownership is not a majority ownership; it is sole ownership.
Unfortunately at this point, you have no say in the matter except to possibly convince your father to consult an attorney regarding this matter, and quickly. There are numerous 'scams' where foreign brides marry U.S. citizens with the sole purpose of taking what they can get as quickly as they can.

