Why is it reasonable to describe the midnight scene in the woods surrounding the Reid dacha as the most mysterious in the novel?

It is reasonable to assess the midnight scene in the woods surrounding the Reid dacha as the most mysterious in the novel for several reasons. First, Lisa is acting strangely in compelling Dolly to accompany her rather than have her return to bed. Second, Lisa appears drawn into the dark woods in the middle of the night by some compelling force. Third, Dolly can see limbs of people hidden by the trees, and whom Lisa addresses, but they do not respond in return. Finally, she and Dolly go back to the dacha in silence, and the subject is not brought up again.