User blog comment:Nostradeneonnostrade/Biscuit Krueger's age/@comment-48285-20180223171446

You might prefer that, but she is, in reality, 57 years old. Nothing about her age changes when she changes her appearance. And the wiki doesn't put up information that you "prefer", only information that has been specifically stated in the manga/anime or by Togashi himself in some other means (for example, a databook where a character's full name and age and whatever else is given).