As long as they get along with each other you probably have nothing to worry about. Is it just that Daisy listens better to your dad and Roper better to your mom?
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."