["I ate the last piece of cake. It was for my sister's birthday she didn't even get a piece.", 'How did your sister react?', "She wasn't to happy with me very upset unforuntately.", 'How did that make you feel?', 'I honestly felt very bad deep down inside.']
That's alright. She's family, so she will still love you. Just learn from this mistake.
I ate the last piece of cake. It was for my sister's birthday she didn't even get a piece.