I'm not familiar with this test, but try googling SAGES-2.
For example, I found this
General Description The SAGES-2 measures both aptitude and achievement. Aptitude is measured via the reasoning subtest. The child is asked to solve analogical problems by identifying relationships among pictures and figures. The other two subtests assess achievement. On one of these subtests, the child answers questions about language arts and social studies; on the other, he or she answers questions about mathematics and science. The child selects answers from a series of pictures, symbols, or words. The subtests can be used to examine the relationships between aptitude and achievement. While untimed, each subtest requires approximately 20 minutes to administer. All of the SAGES-2 subtests can be administered in small groups or individually.
It looks like this is a group IQ/Achievement test that children are meant to 'give themselves' without interacting with an adult. These tests can be very useful, but aren't felt to be as accurate as 'individually administered' IQ tests.
There appears to be 3 subtests, at 20 minutes each subtest, that's about an hour long.
You can make up some pretend questions that have pictures,words or symbols for answers and you won't be far off. There probably isn't a penelty for guessing - a good thing to know about standardized tests.
Good luck reducing that testing anxiety. She might feel more secure understanding that there are 3 subtests and what the subjects of the tests will be. Be sure and tell her that it's meant for some items to be almost shockingly easy and for some items to be super-hard.
G