This is Ora Borg, the daughter of Cyrus Borg and Acronix. She's very smart and works on a lot of science in her free time. Although she's technically Lynn's aunt, the two of them are really close in age and act more like cousins.
More on Ora, at a young age, she learned about Ninjago's history and quickly learned about how Acronix tried to rewrite history with his brother Krux. Acronix told her about how he used to be an elemental master of time, but his powers were taken away for the greater good. He told her about how the element of time was too powerful and it's a good thing those powers were taken away.
However, unknown to her parents, Ora inherited time powers from her father. Although they aren't very strong, she can only really create tiny bubbles that slow down time and jump back in very short intervals. After doing some research, she discovered that even when someone's elemental powers are taken away, they still have the genes that hold the element and can still pass them onto their children. She didn't tell her parents about her powers because she was worried about what they would think. She often trains by herself to try and strengthen her time powers.
She's a bit of a loner who likes to stay by herself. She spends most of her time studying elemental abilities and training by herself. Although she knows her uncle Krux was a bad person, part of her wishes she could meet him because he'd be the only person she'd be able to talk to about her powers.
But yeah that's some stuff about Ora. She's a pretty important character in this story so I just wanted to share a little bit about her.