Liz did not fall off since Lex was keeping an eye on her. Little Blue also did not mean for her to fall off. It was just like a little baby, throwing a tantrum and being mischievous at the same time.
As they flew above the landscape of the Inn, and Liz laid her eyes on entire mountain ranges made entirely of spirit stones, her brain ceased functioning. She could not imagine such wealth. Even seeing it before her, she could not entirely comprehend what kind of immense monetary value a mountain of spirit stone would end up being.
But then again, when one literally had a mountain made of spirit stones, what was the point of money? Money was probably what they burnt to fertilize the ground with ash. She saw lakes of liquid spiritual energy… no that would be called spiritual elixir in this form. She saw natural steam vents, blowing out heated, misty spiritual mist.