Depending on how thick the tile is you may be able to heat the tile with an old steam iron to loosen the cement on the tile. Never heat the tile with open flame, the heating has to be even across the tile. Be carefull when doing this the tile may crack or chip off throwing small chips at you. WEAR PROTECTION! I have NEVER used this method on tile, but have on old linoleum. Please try to find other suggestions, try contacting a building supply store near you. They usually have professionals working for them. There really is no easy way to get the tiles up, and even when you do, getting the adhesive off the wood floor will require some effort. There are chemical strippers our there that may possibly take some of the cement off the floor once you have gotten the tile up. Unfortunatly sanding will most likely be required. This job will probably surprise your wife in a different way.