You don't really think your child can't get to a gun, do you? The key is that she knows what it is for and how to handle one correctly when she finds it. The truly paranoid need to be reminded that most people keep sharp knives accessible without worry. I don't think we have any anti-gun nuts posting in this room, but I'm sure they lurk.
She knows exactly where all but 2 of them are. She knows the other 2 exist, and calls one of them "daddy's snake gun."
She knows what they are for and how to handle one is dealt with on an age appropriate basis. Other than saying it's too heavy for her (it is) she has not handled one, and shows no interest in them, unless daddy is on the hunt for a snake!!!
I grew up in a house with guns (daddy was a cop) and my grandparents also had guns (pop was a hunter and retired cop) and hubby grew up with them as well. We were taught a healthy respect for them at an early age, and are just repeating the lessons.
Just like all who enjoy adult beverages are not going to turn into murderous drunk drivers or wife beaters, not all gun owners are irresponsible criminals out to wreak havoc.
I totally understand your concern regarding the anti-gun types.