As long as your name is on the deed, or even your and your wife’s name is on the deed, both you and your wife have the right to be there, and no one has the right to throw you out, even if they contributed money for the purchase of the house. Even if they bought the whole house, it’s irrelevant. Whoever has their name on the deed has the right to stay there, period. Of course if your in laws are the only ones on the deed, then you have a problem. But otherwise, you’re good.
Call the Law Offices of Albert Goodwin at (212) 233-1233, New York estate, guardianship, wills, trust, medicaid and probate lawyer, and make an appointment to discuss your deed.