NGL while I don't think she has been truely slacking, she can't really claim she's push her boundaries either. iirc there was also something about each volume of her Alchemist
Encyclopedia she advanced thru would would enhance not just her potion making abilities, but also her mental acuity and physical fitness as well.
Even if her progress doesn't directly augment her attributes scores, it surely would allow her to craft potions, trinkets, or clothing that would effectively do the same.