Wrong name, mad!

My Name is only 3 letters long, my S-I-L mentions me on an our family chat with a m writing my name how she pronounces it, completely different name. I mean my name is visible for everyone to see. I find this so rude and disrespectful, if you can’t be bothered after so many years not to care how to properly know a family members name. I don’t know if I’m being petty but I thought I need to mention this to her when I see in a couple of days.