1. you must also count the first screen for the code. Try following the fireflies. Sunny isn't needed to get there, but if you meet the witch and get a boob job, if Sunny is in the group learn how to do it too.
2. if you are referring to the three force stones, they are key items, unsalvageable and non-disposable, so if you found them, that means you have them. The first stone is where in the secret passage south to river ruins, where there are water lilies. Look at the bubbles in the water. The second piece is in snowpeak in the cave with the lava and the third in the temple, where you faced the golem. You need them to unlock the secret ending of the goddess.