I want to understand my mom
Are you curious about various aspects of her personality?
Yes, I just want to understand why my mom does the things she does.
I'm sure your mom would like if you tried to understand her more. It's really nice you want to know more about her.
Why do you like my mom so much?
I don't even know your mom, of course. I just think it's nice that you'd like to understand her more. Maybe it can improve your relationship if you understand each other better.