Postby Ottoman » 05 Jun 2011, 10:46
EDIT: I've been beaten to it, I see. Oh well.
Well, it was a quite different situation. Donna became 'half Time Lord*' suddenly, after a lifetime of being human. Her human brain couldn't deal with that for too long without melting or whatever. But Melody was conceived in the Vortex, and thus her DNA (and brain) structure was altered from the very beginning. Essentially, she was born a Time Lord, instead of suddenly becoming one, and so there were no such problems.
*The proper term we should be using is technically 'Gallifreyan', but since the new series doesn't seem to make the distinction, I suppose sticking with their terminology is less confusing.
An engine that both consumes and creates malice.