I'm here to add what I might come across and at times partake in discussions on the forums. I've done the approval guide for Loghain, as well as added many of the character remarks for all the Origins companions. I've also done a small part of the approval guides some of the other Origins companions, and might do some more if/when the mood strikes me.
I think the dialogue pages are a great way to learn a bit more about the characters, without the trouble of switching out your party time and time again, or simply help you min/max approval quickly. Aside from all that, I try to help out where I can.
Amanda is a firm believer in the Maker and supporter of the Chantry. She tries to always do the right thing and her duty, as that was her fathers dying wish.
She was in a relationship with Leliana for a long time, before Leliana eventually suggested that she’d be happier with Alistair – ending their relationship. However the relationship with Alistair would also end once he revealed who his father was, because she felt betrayed when he didn’t trust her and lied all along about who he was. This also made her give him a scolding after they met his sister, Goldanna.
She still cared for him though and after having freed Connor from the desire demon, with the help of the Circle of Magi, sending Jowan into the Fade, she apologised to Alistair and gave him his mother’s locked – rekindling the relationship. Her sense of duty meant she had to make him king, and not wanting to give him up or become his mistress she announced that she would become his queen.