How is Gothic imagery used the section where Mina searches for Lucy?

Classic gothic imagery includes graveyards, churches, large Victorian like structures (the asylum) and gargoyle like birds. All are in this chapter. In the middle of the night, Mina wakes up with a sense of dread and finds Lucy's bed empty. Frantically Mina searches for him, first through the house and then outside. She goes to the Church, thinking that Lucy might be at their favorite seat in the graveyard. From a distance, Mina sees her there: Lucy is half-reclining, while a shadowy figure with red eyes bends over her. When Mina reaches her, Lucy is alone, asleep, and breathing with difficulty. Later, Mina discovers puncture wounds on Lucy's throat, but she believes the wounds were caused by her own clumsiness while fastening Lucy's shawl.That night, Mina comes home and from outside sees Lucy asleep at their window, sitting on the sill with the window wide open and something like a large bird sitting next to her.