Knowing about their great wishes for their people and their homeland made her feel compelled to help them. Thus, Seraphina as well.
However, due to her status, Arabella needed a good justification, hence why she had to ask Seraphina to provide a good reason why she should act.
{Fine. Fine. I knew you would do something anyway.} Alwin relented when he knew Arabella had already made up her mind.
[She also helped all those needy people who came to ask her for help. I shouldn't get in the way when she's trying to be good. This is better than her plotting to raze Riva again.] Alwin internally said to himself.
'It's not like I was born evil! I was just gullible and was led astray!' Arabella wanted to counter but just kept it in.
Princess Seraphina was prepared to speak so she focused on the latter.