So I was reading up on Braith and her conversations with her parents. So I thought of a side quest for her. After Braith has a conversation with one of her parents, the Dragonborn can talk with her. Braith will explain that she has a crush on a boy, but her parents seem to ignore her. You can ask her who she has a crush on and she will explain that she has a crush on Lars. That's why she acts out because Lars doesn't realize she has a crush on her and her parents don't seem to care. You convince her to confess her feelings for Lars. Braith goes to see Lars and you go with her. Braith tells Lars about her feelings for him and explains that's why she picks on him. Lars is confused at first but quickly apologizes for not realizing. He says that they can go on a date tomorrow. Lars runs off and Braith turns toward the Dragonborn. She states that her parents never cared this much about her life outside the house. She asks the Dragonborn if he would like to adopt her. The Dragonborn says yes and she goes to your house.
The next time the Dragonborn goes to Whiterun, Amren confronts the Dragonborn on the whereabouts of his daughter. You explain that she came to live in your home. He pulls out his sword demanding that his daughter come home. Braith suddenly shows up and steps up to her father. She yells at him for always going away and ignoring her when she just wanted to spend time with him. Amren puts his sword away and apologizes for being such a terrible father. Braith accepts his apology, but states that she isn't coming home. Amren understands and asks if she's happy where she is now. Braith says she is and Amren says that he's. Braith then thanks her father for understanding.
This took me 30 minutes. Like if you cri everytiem.