>>42011678At the beginning of the season she behaved like a jealous and possessive wife with Ash (obviously jokingly). Basically her role was of class president, being the most responsible of the group, but apparently the staff forgot this as the series progressed.
Could have been a great idea for the pokemon staff to explore a relationship between her and Kiawe gradually and organically, and for the first time give Ash a development of character when considering what happens among his friends. It would also have been funny to see Mallow asking for romantic advice from her female friends, and Kiawe realizing that he only has a couple of retards as support.