How did Jens mother manage to take her on shopping trips in among the hidden?

In "Among the Hidden," Jens' mother cleverly navigates the risks of having a third child by taking Jens on shopping trips during busy times when the store is crowded. She uses distractions and the cover of other shoppers to keep Jens hidden from the authorities. By planning these trips carefully, she is able to maintain the illusion of having only two children while ensuring Jens can experience the outside world. This highlights her resourcefulness and determination to protect her child in a society that forbids their existence.