Batgirl: A Matter of Family is the brand new expansion to Batman: Arkham Knight that puts players into the shoes of Batgirl before the events of Arkham Asylum. Set in Seagate Amusement Park, players will have to navigate the different attractions while endeavoring to save some unlucky hostages. Also scattered around the world are three different types of collectibles that, when gathered, will earn you the A Blade of Memory trophy/achievement.
Here are the locations for all 10 Balloons. Head to the location indicated in each image and, if facing in the same direction in the image, the balloons should be right in front of you. If not, then they are right above the direction you should be facing. these are the easiest collectibles to locate and can easily be seen by using your Detective Vision since it makes the Balloons glow. Throw your Batarang and take them out.