Eh, it's not too surprising, that last page. Parents often wish for their children to have legitimate fortunes and to lead a healthy lifestyle. Same goes for people involved with criminal dealings as well.
Assuming it's played straight, that is. I don't think it will be. I suspect she has an ulterior motive, on top of her desire to turn her daughter into a good girl...
Because once her daughter is a good person, she'll no longer be under the effect of Rokudou's effect. And she'll be able to be manipulated by her mother into crime, while still a good person at heart.