I'm not entirely certain they can, unfortunately. [Seeing his difficulty, she scoops him up and holds him closer to... well, closer to her eye-height, at least. Given the height difference between her and Asgore, getting up high enough to manage his would require her to do a bit of parkour.] The Storyteller's power isn't infinite, after all- people usually seem to have some sort of trouble for a bit, when they come back. Fortunately, it tends not to last.