You did not say, how old is Lucy now?

First, I suggest take her to the vet for blood work. This could be a thyroid issue. This is how overactive thyroid, hyperthyroid, manifests itself.

Next, what food are you feeding? Low quality foods, like you find in grocery stores, are full of fillers with no nutritional value. Use a high quality grain free food, like Taste of the Wild, Blue Buffalo, Felidae.

Finally can you feed them in separate rooms? Set the bowl down, close the door and set a timer so you don't forget her! Ten minutes should be plenty, but see how long it takes for Baby to finish. Then open the door and let her out.

For the cords: I had one cat who loved to chew on cords. I coated my cords with Vaseline. This is a bit messy and the coated cord will collect EVERY DUST BUNNY for miles around, lol. But the cat didn't like it and stayed away. After a few months of doing this, I was able to stop, the cat lost interest. During those months, I did have to reapply the Vaseline a few times, and I had to use paper towels to clean the cords and apply again as the dust collection was amazing! But that is all behind us now, so it worked.