Harriet temporarily left Penelope again so she can rest more. He promised to return with her meals later when Emilia is no longer around. He is aware of how much that woman stupidly loathed her so it is better for him to keep Emilia away from his granddaughter's vicinity. Maybe because her body is still exhausted from all the things that happened these past few days, Penelope fell asleep on her bed.
When she sees her surroundings, Penelope already knows that she is dreaming. In her dreams, she is still wearing the same clothes and shoes. But her surroundings are somewhat unfamiliar. If she's dreaming right now, it only means the things that will possibly happen in the future.
In her dreams, Penelope is running in a long corridor. The corridor seems like an endless road. Penelope keeps on running in it but she cannot reach its end. Behind her, there is a sound of footsteps that is following her from behind.