I feel like literally 100% of Acerola's bit is just doing whatever the hell she wants carte blanche.
Show off some ancient books of literally all our heritage to a couple of random kids? Sure, go ahead. Set up a trial in a failed supermarket full of spooks? Knock yourself out. Be the only member of the Elite Four who hasn't graduated from puberty? Absolutely, you want that room in purple or grey?
Kid's got it made. She backs it up though; I especially like how she mentions she wanted to take you out and become the first Champ herself at the end. Got spunk. Probably my favorite trial captain.
[EDIT] Odd bit from Bulbapedia though?
The hell? That ain't an age, that's how you write "shrug" in numerals.