Well said. We are off topic from the OP. Let's return to that.
Let me repeat as Rbid said - you cannot trust young children around guns and ammunition - that's it.
Airport scanners and guns don't mix, either, but look how many people accidentally put a handgun in one, like Ted Nugent's wife last month, of all people.
This discussion is precisely on the topic of whether the OP should get a pistol or a revolver. She is obviously new to carrying. All the suggestions to "keep it on your person" are fine for men but many, if not most, women are more comfortable carrying in their purse.
She has kids
and runs a day care. Of course you should never let a child get hold of your firearm (without your supervision for older children, and never for the youngest) but all it takes is one mistake, one moment of distraction or absent-mindedness. I've seen women faint to the floor out cold because they cut their finger slicing vegetables. There are a million ways a person can become incapacitated through no fault of their own and expose their weapon, if not send it bouncing across the floor.
You have a revolver, you have to completely unload it to make it child-proof. You have a semi-auto, you have made it child-proof (except for those few who have been
taught to rack slides for Youtube videos) by simply leaving the round out of the barrel, yet if you need to shoot you can have it ready in
less than one second.
The OP is around kids day and night. Of course you try to make sure no kid gets hold of your gun but only a fool thinks, not only that they are perfect and will never make a mistake, but that they also will never have an accident.
I'm done. The OP can decide for herself which risk she wants to take.