Frogs usually stick around a food source, so if she is hanging out there, I am sure she is finding something to eat. I'm positive she wouldn't mind a cricket or two, but if you let them go on your balcony, you might find a cricket or two inside! Nothing like waking up with a cricket in your bed ! As long as she doesn't look skinny, I wouldn't worry too much. Personally, I am all for keeping wild frogs in the wild, but if a frog is injured, hungry or in other danger, I'm a sucker and usually bring it in. For now, I think she quite likes hanging out. And kudos to your son for picking such a great name!!