click here to download an ISO Image of a Vista Repair Disc. click here for background information.
Option 2 is to look up the method of accessing the Recovery Sector for her model of PB Laptop. It will probably be the F11 or F10 key. Post the Model of laptop and someone may be able to let you know.
Incidentally, you might have got a quicker response in the Helproom Forum! Don`t duplicate the thread yet though - I`ll check back tomorrow morning.