[header] How to apologize to your older sister [title] Find a quiet, private setting. [step] Start by finding a quiet area in your house where you can address your sister in private. This may be in a room you share together or in your sister's room. 
Making the apology in a private, quiet space will show your sister that you are serious about your apology and want to discuss the matter away from others. [substeps] Try to make your heartfelt apology in person, face to face.