Lily had been cautiously walking up the stairs for a while now, and they seemed endless, and if it were not for her near infinite stamina, she would have collapsed, and tumbled down from where she came from.
It did not help that the climbing was also mentally straining, because of the oppressive aura crushing down on her, by the big boss in the highest floor, probably the roof.
The more floors, she cleared the harder it became, but despite knowing her odds, were probably stacked against her, she still pushed forward, mostly out of curiousity, who's this spectral constellation and the other reason being she had a clear way of escaping if things, didn't go her way.
When she reached the middle floor of this tower, this place took a turn from being normal creepy, to a full scale, you must get your ass out of here, before you get yourself killed, kind off energy vibe.