Cinderella's stepfamily if they lived and breathed "love and support my stepdaughter/stepsister", with a touch of hilarity. 

It's sweet if you're in the mood for something lighthearted and family-centric, but mileage may vary with the episodic pipeline of "oh, god, they're sure to hate me and kick me out now" to "they... don't mind and actually accept me?"