It's a deceitful plan by your MIL to screw her husband out of his 50% share of the condo in a divorce settlement. Don't be a party to it and advise your wife to distance herself from it. She will feel bad about helping to defraud her father and it will destroy her relationship with her father. Her father will be left homeless and penniless and is she ok with that? What has her father done to deserve it? If she helps her greedy mother strip her father of his last property she will have no peace of mind.