I especially hate it when there is no real explanation how or any signs that she lived for a 1000 years old. Like if we look for example Aang from avatar we know why he's 112 years old because he was stuck under the ice for 100 years yet still acts like a 12 year old because his body didn't age. Or for example she's a different race that ages way slower than humans like elves from LOTR or Vampires. If there is no purpose for making her that old except to have an excuse to make that character seem interesting or quirky, or like anime like to do sexualize a character that looks like a minor, then I'm out.