Is it normal my sister moans my name when she's touching herself?

my sister's room shares a wall with the bathroom, so when i'm in there i can hear what she's doing. sometimes when i'm in there i can hear her moaning and moving around and it's easy to figure out what she's doing. i try to ignore it, but really i can't. a few times when i was in there i'v started hearing her moan my name. usually i'm trying to get out quick so i hear it only once but one day i was sick in the bathroom while she was busy so i heard it for a while and she actually moans my name several times. i don't think it's gotten more common i'm just realizing it more. i know it's my name because she's never had a relationship with anyone with the same name as me and my name isn't too common here. should i be worried?