Gunnerkrigg Court 3: Mystery Solved!

[Giggling Ghast]

So then only 1 question remains:

Why is she bothering? We know she only mimics love and interest, but why is she bothering?

I wondered that myself, and I would put forward that Jones is simply hiding in plain sight.

Consider the implications of a being like Jones in our own world. She has not only seen the entirety of human history but the very beginnings of the Earth itself, and she remembers every single instant of her existence. Consider the impact a being like her would have on religion, science, philosophy, etc.

She might simply want to exist unnoticed. Appearing as a young woman working at the Court helps facilitate that disguise.