Thank you for allowing me to assist you.
Depending on what state you are in, you may be entitled either to an interest in the property or reimbursement for money paid toward the property. However, no state court in the United States can order a Brazilian government authority to place the property in your name. Therefore, you could only have a right to the value of the property, not the property itself.
The exact interest you could claim in the value of the property depends on many factors including:
Did the two of you have any verbal or written agreement with respect to finances?
In New York, there is no common law marriage and the only rights you could assert in court would be rights under a contract you entered into with the other party. What were your agreements with respect to the property?
Well, I think you are unlikely to get anything from the property. Because the land is in Brazil, the New York court cannot touch it - they can only give you money. But since you have nothing in writing and she put the property in her name alone, she has a good argument that it is just hers.
You could certainly sue her for breach of contract, but that would be costly and probably would not work.
That depends on the terms of your verbal agreement. To just say, "she told me the property was for both of us," may not be enough to get you any rights to the property. Contract law is very complex. I can't give you a number, but I would say your chances are very, very low of succeeding. You would want to contact a civil attorney. They would charge you by the hour and it would be very expensive. And you probably would not get anything back at all.
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