Explanations
Elna poked her head out of her hollow as the band and Cron flew by. "Hey, what's up?" she asked.
"We think we found out how Bell got petrified." Twilight explained.
"How?"
"There was a giant snake who did it." Gylphie answered.
It sounded like Soren was saying something, but Elna wasn't paying attention. She was stumbling back in shock. "The Basilisk." She gasped.
"The what?" Twilight wanted to know. He landed at the entrance to their hollow. The others came in after him.
"Th-the basilisk. It's a giant snake in a chamber at Hogwarts. It kills people by looking them in the eye." Elna replied.
"But that can't by what this is." Soren argued. "It didn't kill Bell."
"She was over water, she might not have looked him in the eye." Cron pointed out.
Elna nodded. "If you don't look it directly in the eye it petrifies you instead."
"But the tunnel collapsed. How would he have gotten through?" Soren objected. There was a sound of desperation in his voice.
"Cron and I felt wind in the tunnel. It might have opened up again." Gylfie told him.
By this point Elna had figured out Soren didn't necessarily think they were wrong, he just didn't want to think there was such a creature at the tree. "I wish I was wrong Soren, but it makes a good deal of sense." She said.
Soren sighed. "Alright, let's go to the tunnel. We can see if it's reopened." Elna started following them but Soren stopped her. "You have eggs to watch. Stay here, we'll take care of it."
Elna looked at the ground and tried not to show how upset she was. She was so hoping the portal was open again. She wanted to find out and if it was, she wanted to visit Hogwarts. She missed Hogwarts, nice as the tree was. "You'll tell me what happened? And if the tunnel's reopened?"
Twilight nodded. "Of course we will."
Elna smiled softly at him. "Then I'll stay." Then she went back and sat on the eggs again. The others left her.