You can fall into bad habits again. The surgery doesnt fix our head issues with food. It just keeps us from eating too much food at a sitting. Now soup is actually more liquid than anything else, so it can go through very quickly. Just because you drank 8 ounces of soup does NOT mean that you'll be able to eat huge amounts of food.
You said that you basically failed to plan and ended up taking in more/wrong food. You already know that you're going to have to plan better from here on out. I assume you're on clear liquids since soup is freaking you out, so make sure you prepare things that are allowed at this stage and take them with you. Later, it's a good idea to keep a couple of protein shakes handy and/or carry a protein bar at all times. I do lots of driving, so I make sure I always have a protein bar in my purse. That way I don't stop and eat somewhere that doesn't have good food choices for me.
BTW, you are NOT a bad girl. You're in a learning process right now and it does take some time! Good luck!