In MS office from the toolbar it's file, box appears then page set up. in OO it's format, box appears then click on page and all the options are there. It's a lot more logical IMO. First time I used office it tool me ages to work out where the page format controls were-under file was the last place I looked.
That is assuming you mean she just can't find them.
If not and she kept the downloaded installation files you can re-install and do a repair to correct any problems-sometimes it doesn't install properly. If she didn't download them again and save somewhere and do a repair.