FInd out what disks she has. Gateway provided Recovery media as well as an OS DVD until recently.
If she has these and they are still bootable, then the Recovery partition can be wiped along with any useless utility partitions which can interfere with Windows 7.
If not, see if you can make Recovery media from that partition, or test it from boot to see if it will run, then decide whether to keep it. It may not run after Windows 7 install, however. If it was all I had to recover to factory condition, then I'd probably keep it if it runs, then test it again after install to see if it still runs. If not, I'd then wipe it and recover the Disk space into Windows 7 using free Partition Wizard bootable DVD. SSD / HDD : Optimize for Windows Reinstallation http://www.partitionwizard.com/download.html