The motor that comes in your Hornet is pretty tough for what it is, water isn't going to be an issue for it. The ESC (electronic speed control) on the other hand does NOT like water and most likely has now moved on to a better place. The batteries you listed won't be the issue either, the 3000mah one will perform better though.
my version of "a little water" and that of a kids are normally 2 different things.