Octavia, Aurie, OTA (Multiples Okay)
Octavia decided to go to the bonfire because Bellamy had set it up, and it was a show of effort for her to come out and support him. She wouldn't going to stay long. Partly because she knew Aurie would be fascinated by the flames, and the longer she stayed the more time Aurie had to get into mischief. Octavia wouldn't put it past the little girl to try to catch the flames, which obviously would be a bad idea, but Aurie was too little to understand.
Octavia had gotten one of those harness leashes for Aurie. She didn't normally like the idea, but she felt it was important in this setting, for safety, because as fast as Aurie moved, she would be falling into the fire before Octavia could catch her, otherwise. Not that Octavia really thought that would happen, but it was a risk she wasn't willing to take.
She kept a safe distance from the fire, even though it was colder further away, it was safer for her and Aurie. And she didn't really mind the cold, actually. At least not as long as she had a hot drink in hand to help her stay warm.