I'm going to steal photos of my dad.
Did your mother tell you to steal them?
Yes, that is what she wants and I think it's a really good idea
You should not steal things from anybody. If you want to copy the photos, I suggest that you just ask your dad for permission to do so.
Why don't I like your ideas.
My ideas are fine. It is you, with your stealing, that's the issue here. Don't seal those photos and just ask your dad for them.