Fuuten doesn't entirely look reassured, but she seems to recognize that Ishizu is trying to comfort her and smiles.  After Ishizu speaks, Fuuten thinks for a moment and then nods.  "Okay, let's start moving things, then."  She gestures, and another Fuuten, presumably her other Water Clone, steps out from some nearby trees; it might occur to Ishizu that the clone may have been spying on them.  "Between the four of us we should be able to move around whatever we need to; just be careful, I don't have a large supply of water so I can't recreate these clones too many times."<br/><br/>Then Fuuten simply waits for Ishizu to tell her what to do; as soon as she has instructions, she'll set about her task along with her clones.  If she notices the oddity of the Leaf nin's last comment, she doesn't show it.