Answer is: Maria's chemical analysis is not correct.
Sucrose is only dissolved in water, there are still sucrose molecules in solution, not molecules of fructose and glucose. For breaking bonds in molecule of sucrose enzymes are needed.
Solution is homogeneous mixture composed of two or more substances.
In aqueous solution, solvent is water and solute (in this example sucrose) is a substance dissolved in water.
Homogeneous solution of sugar and water can be separated with heating (evaporating the water).