Lena, 9 months

Lena is the quieter, more focused twin. Sits unaided for 5+ minutes and babbles a lot ('ba-ba-da'), responds to her name faster than Bruno. But for the last 2 weeks she's refused everything except purée — banana chunks get spat out, a spoon of minced meat ends on the floor. Dad Stjepan (on 6-month parental leave) is worried: while Bruno eats anything, Lena is moving backward. She sleeps brilliantly (11h with 0–1 wakings, falls asleep in 5–7 min), but her afternoon nap is starting to clip short by 15 min if Bruno snores in the next crib. The biggest Lena question: how to bring textures back without making her pickier, and how to tell an 'observer' personality from a real developmental delay.