Aita for being alive

I know from the title I sound like an AH but lemme explain

So I have a step sister (27f) who has never liked me (26m), I always got the better gifts and more money because I am the best bio child and since she's the step sister and she has to be poor and evil

Well yesterday at the family gathering my mom and dad (she's adopted) wanted us to solve our issues so after everyone left they called us to the living room and told us to sort out our issues

She just said she wishes I wasn't alive and left, that really hurt my feelings so I was wondering, reddit, AITA for being alive?

Edit : I saved superman, the tri state area and I built an orphanage but still, AITA?