G.I. Jenny

(Spoilers for The Doctor's Daughter and the whole of Series 4 ahead.)Snell was pointing out last week in the Sontaran comments section that the theme of the Doctor inadvertently creating soldiers ran through Series 4, pretty much from the point where Donna comments about Martha's new vocation. Since militarism is pretty much anathema to him, he then spends the rest of that story grumbling at military types and asking them not to salute or point guns, all the while ordering them about the place. It's one of the character's central paradoxes.

This theme is made manifest in The Doctor's Doctor, when a sample of his DNA is used to literally create a soldier from thin air. Let's talk a little here about Georgia Moffett's role as Jenny (which should really have been Genny, based on the name's "generated" roots). How perfect is that casting? For those who didn't know, she's Peter Davison's daughter, so she really IS the (or a) Doctor's daughter. I don't think she particularly looks like her father, but there's sometimes a sense of it in both appearance (they made her blond, for example) and attitude (her energy). And it makes sense that a Time Lord would have super-DNA coded with all his selves, and that a clone-child might take after any of its parthenogenetic "parents".
But the Doctor doesn't want to acknowledge this child, in part because he can't quite respect the way she was created, seeing her as a bastardization of the lost Time Lord race, in part because she's a soldier, though she never actually "chose" that career path. The tension in the piece doesn't really come from the frankly silly plot, but from the Doctor's moral paradox. Jenny calls him on his bull, and he has real trouble justifying his actions as "non-fighting". While he is haunted by what he has produced (and the guilt from his actions in the Time War), we must remember his influence on the characters. Jenny sees a greater purpose by the end of the episode, and though Martha seems essentially wasted in this story, perhaps she's there as a mirror for Jenny. Though a soldier in The Sontaran Stratagem, The Doctor's Daughter shows Martha as a peacemaker.
In fact, she's the Doctor's stand-in on the Hath side of the story, showing the same kind of leadership, and even goes through a guilt-inducing event (the death of the Hath). The point is that there are good reasons for fighting, honorable ways of going about it, and proper moral ways to feel about it (the lesson Jenny learns). And when, in Journey's End, Davros needles the Doctor with the Children of Time stuff, we best remember that (as the Doctor should).

So what happens to Jenny? On first watching, I thought the energy coming out of her mouth at the end was a delayed kind of regeneration, using the same kind of energy we see seeping out of the Doctor in The Christmas Invasion. But on rewatching it, I notice the energy is the same greenish color as the terraforming energies of the "source". Jenny is actually resurrected by the same process that rejuvenates the planet's ecosystem (like the Genesis Planet in The Search for Spock). In the Messaline myth, the source is called the breath of life and God's sigh, so it was all foreshadowed.
Now she's travelling the universe in whatever time period she's in, and hopefully we'll see her again. I'd love it if she was the companion for one of this year's specials. Bottom line, my appreciation for this story comes down to the moving acting from all four principals and the effective exploration of the series' themes.

Things to watch out for
Donna's Destiny: Tragedy is in the making as Donna boldly states that she will never, like Martha, get to a point where she doesn't want to travel with the Doctor anymore.
Wibbly-wobbly, timey-wimey: The first instance in Series 4 of the TARDIS being drawn to a point just before a Time Lord (or Time Lord-like being) could be created (this last happened in Utopia). The ship spins out of control, lands right next to a cloning machine with no explanation? Is it hard-wired to try and recreate the race that spawned it, you think?
They call it foreshadowing: The hand makes an appearance, just to remind you it's there.
Are you my mummy?: There is no better example of a character born from a single parent, and seeing as this is all building to the creation of the Doctor Donna, there is particular meaning to the creation of a character that's part-Doctor here.
The reference section: "Seriously, there's an outrageous amount of running involved." The Troughton legacy. The Doctor mentions he's been a father before (Susan's parent). How this can be reconciled with the New Adventures' "looming" idea isn't clear, since the books' idea of Time Lord reproduction is a lot closer to the cloning machine seen in this episode than anything resembling human parenting.
A few production design note about Jenny's shuttle - roundels!!
Next week: Murder Week Addendum!