I think Manfred von Karma was a selfish guy. He only thought about himself. I don’t know why he did what he did, but still, it was wrong and it cost a lot of people their lives.
As for Franziska, she’s done a lot of changing since I met her last year. She’s slowly improving and, well, she’s somehow following in Edgeworth’s footsteps. If she keeps it up, I think she can do better than her father.