Aurora Grimm is the sister of Ben Grimm. She grew up along with him and Reed, with them igniting in her a love for science. So when they were adults, working with Reed was basically her dream job. Despite the hard times they fell on she was still was devoted to the work they were doing, so she jumped on the opportunity to go to space with her brother and their best friend.
So when the storm hit, she got powers just like the rest of them and devotes herself to trying to make the team work. But Ben feels alone, Reed and Sue keep remembering the past, and Aurora and Johnny are so different. She thinks, he acts. He's Mr. Popular, she hates the attention. She wants this to end, he's living the dream. He's hot, she's cold. How can she trust in him, when they're opposites.