Would you be upset? Should I invite her to my housewarming party?

A few days ago, my family had a Christmas party. My aunt was quite rude. Each of the aunts and uncles give a gift to their nieces and nephews. The cut off age for this is when we are out of college. I'm 20, my older cousin is 2 months older than me. Because of health reasons, I am taking a year off from college. I got gifts from everyone but one aunt, who  gave my older cousin a gift right in front of me and didn't even look at me. Mind you I've done absolutely nothing to her, but she didn't even speak to me at the party. Now I don't feel like I should invite her into our new home when she was so rude at the Christmas party. Would you be upset?