She decides to feed them.

Having played the part of "baby" for as long as she has, Rapunzel played her part well, and was more used to it than Anna was. In their highchairs, Rapunzel gave Anna a reassuring smile behind her pacifier, causing Anna to burst into a fit of giggles from her silly baby cousin as the two of them began to swing their legs back and forth in their high chairs. Elsa strapped two, matching bibs around their necks, each with a smiling sun sown on it.

"Are my wittle babies feeling hungry?"

"Yes, big sissy," Anna answered as Rapunzel silently nodded her head.

"Well I have just the thing a pair of growing little girls like you need."