If I have a girl my sister said not to give her my middle name??

So my SO and I we're thinking up names for if it's a girl because we only had a boy name picked out and we're getting hassled about girl names. We came up with a few options then got stuck on middle names. We thought about mine (Sky) it goes with most any name and I thought it would be special to have a part of me (my baby) have part of my name. But my sister said "PLEASE don't name your kid after yourself." It kind of upset me. Is there something wrong with that? Maybe because she's already going to have my last name?? (specific reason, complicated please don't  ask)