Aria began extradimensionally storing the treasure - probably a better haul than any she'd had before, possibly even better than all her past takes combined! - and answered, "The nymphs I expect could handle themselves, as their own spell knowledge reached quite an echelon...and this seems about an unusually safe place: inaccessible to most, and few who knew of the rainbow dragon lairing here, would dare to trespass, I expect. The primary danger to the humans if left here alone, that I see, would simply be starvation, trapped halfway up a sheer cliff in a cavern, if the worst happened to us and we never came back to take them elsewhere. Whereas the nymphs can apparently fly and let others fly with their magic. Of course, both have lived their whole lives so far in the jungle, as far as I can tell, and might feel comfortable getting along anywhere else too. I suppose  we could always ask for their own opinions on where they wish themselves to be."