I hate my stepdaughter how do get her out of the picture again?

'I don't want to sound selfish' you sound like a spoilt, immature toddler. Her father has divorced and remarried and you wonder why she's having a tough time? You're a mother! How would you like it if he said to your 4 daughters and your son that 'he wants them out of of picture'. It wouldn't be nice! At the end of the day, he's your family by marriage but he's his daughter's family by blood and blood is thicker than water! Grow up!