I'm planning to cook her guinea pigs into a nice thick broth.
Why would you cook someone's pets? I hope that is a joke.
This is not a joke. I think she will like the food.
That's gross and very cruel. She loves that pet and you shouldn't harm it or do something gross like that to her.
What if she is hungry?
That does not matter. You can serve her regular food instead of trying to cook her pets. That is not nice.