What do you mean "find her a new home"?
Leopard geckos are very simple creatures, the most "complex" thing about them is their sometimes pickiness with food - some will only eat crickets, some will only eat mealworms, some need a varied diet, etc.
As for jumping off of your hand, thats totally normal. That has nothing to do with complexity or strange behavior.
Leopard geckos like to explore, so as soon as you take them out of the tank they will try to run around (if given the opportunity) and jump off of hands, beds, tables, etc. Normally a gecko will not hurt itself when jumping off a surface. Only worry if you see definite signs of damage; if the gecko jumped and fell more then 3 feet; or if it fell onto a very hard surface like pavement or stone. However falling onto a bed or plush carpet probably wont hurt them to much - but of course help them to prevent this as much as possible!
Also, I have heard this "popping noise" from one of my own geckos on occasion too. I am not sure what it means, but I typically let her just be alone and rest in her tank if I hear her make that sound or if she exhibits any other behavior that are "out of the norm".
