@NaciremaMi to be fair according to the first few chapters the main "summoner" class is a combat class that gains bonus stats by linking the familiar's stats to the summoner (unlike traditional summoner mechanics we know), Ian is the hidden class that focuses more on the familiars (resembles the typical type more)
the elf girl probably want him to spend all his points, and the books are probably very expensive... maybe her bonus pay is based off her sales performance? XD