A girl goes on dangerous magical quest to find missing clock tower automatons. I read this book sometime in the mid-1970s. It may have been published from the 1950s-1970s. Statues or automatons have disappeared from the town cathedral or clock tower (I lean toward the clock) and if they are not restored by midnight (?) on a certain day, chaos will ensue. There is a European city feel to the magical yet current-day setting. Toward the very end, some adults are talking, “I’m letting her sleep. ” There is a sense that she has done things which were not quite lawful but she is excused because of her accomplishment. The adults may be a mother and aunt, or maybe aunts only.