I bought 3 rough greens a couple of months ago. They are beautiful little snakes that do well in colonies but, as Pendlehog says, if you want to handle your snakes these are not for you. They are very delicate and would get extremely stressed if handled. They need lots of plants as they are semi arboreal, but mine dont seem to know about the semi bit and spend 90% of their time in the plants (I have real ones in there to keep the humidity up). The rest of the time is spent under a pile of dry moss in one corner. They dont seem to use their wet box, but I have seen them bathe in their water bowl occasionally. Unlike most other snakes, the food item (crickets) should not be any bigger than their head. I've never seen mine actually eat, but the crickets vanish and snake poo appears on the leaves of the plants, so presumably all is well. If your daughter does get some, make sure she gets more than one and that they are not wild caught imports.
P.S. They dont smell at all!