Try it when you're home to observe what she does. The idea is that you mix some water with your regular cat food and freeze it either in an ice cube tray or muffin pans - doing both would give you 2 sizes of catsicles and they would (in theory) thaw at different rates. Hopefully she wouldn't eat it til it thaws. The goal is to have food available to her spread over time while you're gone. If she doesn't eat it all at once, you could also just leave out canned food with a couple of ice cubes in it. As they thaw it'll help the food stay fresh and not dry out. Punkin would've eaten any of those as soon as I put them down, probably even gnawing on the frozen food, so I used a timed feeder for him. I saw recently that someone (who i think was brilliant) bought 2 timed feeders and set them to go off all day long while they were at work.
I don't know what you have available to you in Italy - but we bought a Petsafe 5 Compartment feeder, which had 4 compartments covered. That meant I could set the timer to open a compartment every half hour or so for 2 hours, or on whatever schedule I wanted.