Comment Graphics tablet. (Score 1) 385
I would suggest that you include a graphics tablet. The field you describe is wide. Ranging from heavy number cruncher to equation pusher, so the capabilities of the laptop needed will vary a lot. ( But as a student that's probably not her next laptop but the one after that. )
Also if she needs very heavy processing the university will provide that.
However any physicist will make good use of a graphics tablet, especially a Cintiq type tablet. Though you could save yourself a ton going for Bosto or Yiynova. II understand there are also kits out there that will convert an LCD monitor to a Cintiq clone. BUt such a mod may make your laptop unclosable.