Here’s my rec from AliExpress. Modern shape and color but a lot of classic imagery still. This one sort of as well. You could then pair either with a more traditional RWS deck for her to compare the imagery too. I wouldn’t fuss too much on getting a guide book. The internet has a wide range of interpretations to draw from. Wikipedia even has a pretty good set of pages on all things metaphysical and I find that it approaches them from a pretty grounded place as spiritual traditions without placing a lot of weight on them as truly divinatory or anything.