The temperature in the mountain range soon dropped after the sunset.
"Time to find a place to spend the night," Lightning thought. The temperature here varied dramatically between day and night. It was scorching during the day, and she would get burned easily if not covered with anything. When night fell, the wuthering wind would take away all the heat, and she would have probably been frozen to death if she had continued to sleep in trees like she had done in the Misty Forest.
Therefore, Lightning must find a shelter before the darkness pressed in.
"Let's call it a day," Lightning spoke over the Sigil of Listening. "I'll find a shelter and you go bring some food."
Maggie could not respond when she was flying, but Lightning knew she heard her.