If you had information regarding her whereabouts and were asked directly-- then you could be charged with hindering apprehension.  You can refuse to help them... but you cannot actively hide your ex-wife... and giving false or incorrect information could be construed as attempting to hinder her arrest.  If they don't know that you gave false information at this point, then likely nothing will happen because they don't have information with which to charge you.  However, if they do ask you again, you need to tell them what you do know- simply that she's left the state or planning to leave the state-- and you don't know more than that. Your relationship with your ex- may be good or bad... but it seems likes she has gotten herself in a situation -- and those are her choices to deal with not yours.  Avoid any overlap into her troubles by simply telling law enforcement the truth.