why don't you take a big picture of your entire plane. that could help us out a bit. it is not unreasonable that your fiance, even if she is the goddess of the world, may not be able to hand launch a plane right. these planes need to be launched, not tossed and not thrown so it really does take some practice. that said, after the first launch there could've been a hundred things that went into misalignment. hard to tell. take some pictures.

1. take it from nose to tail to see the alignment of the wing and tail feathers
2. take it from the side so we can look at the incidence of the wing against the motor and tail feathers
3. take pictures of the tail feathers in neutral position
4. post it all!

i wouldn't be surprised if it was that your battery was just not charged correctly and that the plane just didn't have the power to climb... you put in too much elevator and it stalled into the ground. that takes only a second to happen and usually happens right after a hand launch. my friend had to literally run when launching to get enough airspeed.