I'm just trying to imagine her face journey from normal, to Ara Ara, to "oh shit, crying child", to "slow down there Casanova", to kindly Ara Ara. It was probably magnificent.
@Walter_vi_Britannia It's a Monogatari reference. Hachikuji jokingly tells Araragi that she saw "love" being sold at the convenience store for 298 yen.