Both Beatrice and Axl are relying on their deep internal instincts as parents to guide them towards their son, even though their minds struggle to remember him. They are choosing to put all of their faith in the power of love—specifically the love parents have for their children, no matter how old they are and how long they’ve been apart—to guide them to their son. Furthermore, they are trusting that their son, even if he was sent away and Axl prevented Beatrice from going to him, will feel the same amount of love for them and any past resentment will have dissipated.