I would sit down for at least a few minutes, and give her a little "ground school"...[8D] Carefully explain the 4 functions of the sticks.
It happens, sometimes, when you say "give it some up"...the student pushes the stick up...[X(] (which obviously, is down elevator )
I typically say "pull back on the stick a little bit" or "pull the right stick back towards you" (mode 2 ) along with "think smooth"...try not to "boing" the sticks...etc.
