Well, since she's recovered from losing the essence, and she hasn't been plugged into that device in at least a year, I'm not surprised that she can walk on her own now. As for where she is, this reminds me of all of those movies where something supernatural, or merely a hallucination or vision, causes someone to nearly fall a cliff or ledge, before being rescued at the last second. She'll either follow that pattern, or fall and land on someone... or something... I wonder if Cerberus has forgiven her for taking the three of them down.
"Stick around... I'm full of bad ideas." -Isaac Clarke
"You've chosen your Answer. Now see it through." -Serene Haze
Check out my literary comic: Kurosai Chronicles