I need help, can't see "me" using my apple ID, it shows my sister

[beloved1228]

I use iMessage and find my friend but my sisters name and picture comes up. I checked my setting and I am signed in with my ID and even checked to make sure my ID has my name and info (which is right) anyone else have this issue or know how to get this fixed?
(might I add she doesn't even have an iPhone or iPad)

Thanks

-J