Doctor Who: Trailer thoughts

[butterfly]

aka "The Doctor's Daughter"

So, OMG! The Doctor's daughter! From a general glance around my flist, it looks like a lot of people are dreading the upcoming episode but I'm really looking forward to it (I should possibly try to restrain my enthusiasm, as I was really looking forward to "The Girl in the Fireplace", too, and we all know how I felt about it after watching it).

My question regarding the TARDIS is this -- were they summoned by where they're going or were they sent by some other force (*cough* Bad Wolf *cough*)?

Now it looked to me as if the Doctor recognized his 'daughter' all on his own. Her "hello, dad" came across as a true greeting, not a 'surprise!' moment. And the way he says, "She's my daughter," has an incredible weight to it. I have to admit to being terribly curious as to whys and the hows of her existence (as both Donna and Martha appear to be).