Be polite at all times. Don’t argue with your sister or talk back to her. Show respect for her. Don’t curse or abuse her. Saying abusive words is a sign of disrespect.
Watch TV with your sister. Play with her every once in a while. You don’t have to give up your whole life for her, just about 20 minutes a day.
Don’t make your sister feel left out. Never leave or ignore your sister; it can cause her to feel unwanted or useless. Don’t act like a mom. Don’t judge her. Always remember you’re her sister not a parent.