(((hugs)))) There is nothing wrong with you, and feelings are not wrong to have... they are just feelings, for better or for worse, and they are deeply rooted in a history. I agree with the above.. this is an age old problem, sibling rivalry and is so very common.

Know that you are special apart from your sister in your own right, based on who you are as a person who is completely separate from her, with special qualities that are all your own and unique only to you. When you embrace self love in this way and realize how special you truly are, the threat may drop away.

Even if she is pursuing a similar field, perhaps look at this as flattery. For all you know, she may be jealous of your intelligence, drive and career ambitions, and she may be modelling herself after you. I suspect she is. She is younger, and that happens often with younger siblings. Jealousies can run both ways.

In my opinion, it says something about her that she wanted to find a rich man to take care of her... that shows she doesn't have much confidence in her ability to succeed, but now she is trying to. Perhaps she wants to be more like you- independent, successful and self-sufficient. So there's another way to look at it. (((Hugs)))