I'm annoyed that my gf eats the entire apple seeds and all
Does she do this to annoy you, or is that just the way she eats them?
I don't know. She must know that the seeds are not supposed to be eaten. They're for growing trees.
Well, it's good to be concerned about the eating habits of your partner, but if she's not harming herself, it's wrong to criticize. It'll just make her resent you and start criticizing you for harmless things.
Actually, I want her to suffer from the financial repercussions.
You should not wish harm on your girlfriend. Her eating seeds is not something  you should get upset about. She is not in danger from it.