I also have difficulty making my sister, younger sister in particular follow what I request.. It seems unimportant for her, but that doesn't mean I am disrespected.. Although it is disappointing but the least I would do is to feel bitter or got angry.
It is important that the two of you talk about things inside the house and make each other feel valued and trusted not only by character but through initiating this and that.. You're not in a one way kind of relationship now.. It's a give and take rel..
Roman Sunburn mentioned a helper, I guess that might be a nice idea. But it doesn't fully solve the prob..