According to Bessie in Chapter Five, how did their mother deal with their unique ability?

Carl tells Lillian that the two of them need to work together. He says his livelihood is connected to hers, so if she fails, then he fails too. Carl also reports that Madison believes having the children visit the main house too soon will be overwhelming for them, so for now she wants them to stay at the guesthouse. Finally, Carl tells Lillian she can reach him at any time by dialing 1111 on the phone in the kitchen.