Can we draw the following hypothesis from the context? 

Context:

What must it be like to be imprisoned here, day after day, month after month? I wonder, does he keep them chained and manacled, thought Fenella, or does he use sorcery? And so utterly immersed was she in this strange blue and green land that was not feeling strange any more that she did not even notice that she was weighing sorcery against steel chains and seriously considering the likely outcome.

Hypothesis: Fenella was weighing sorcery against steel chains
Yes