Does my Guardian/aunt love me?

My aunt took me in to her house at the age of 12 after my parents died. Before my parents died she was the best aunt ever. As soon as I moved in she started treating me horribly. Example: When I was 15 I woke up so sick one morning that I was vomiting everywhere and fainting. I asked her to take me to the hospital and she yelled at me and said that I'd have to wait til she finished cleaning the house. Then my 19 yr old cousin (her son) yelled at her to take me or he'll take me. She finally took me after 2 hours!! I had appendicitis! I moved out at the age of 18 because I couldn't deal w/ her anymore. I tried so hard for her approval and got nothing. I turned out ok. Have a great job and never asked her for any help. Unlike her kids who depend on her for everything. Since I have moved out she never calls to say hello or wish me a great holiday or anything...I have to call or go over to visit. If not then I would never hear from her. What's her problem w/ me??