I am 25 and have a sister who is seven years older than me. She has a very resentful/passive aggressive attitude towards me because she feels I always "get lucky" in life.

I feel like I am doing pretty well for myself. I live in a big city, am smart with my money and good job(s).

She gets upset with me often because of how "lucky" I am and how our parents always "favored" me. I just take initiative. I work in sales and I am very much a people person. She is a stay at home mom who still hasn't found her calling. She mentioned she was upset that our parents didn't send her a card in the mail to wish her a happy anniversary or happy birthday which was her way of passive aggressively telling me she is unhappy with me not caring either.

How do I handle her constant victimized attitude and resentment towards me?