Glad to hear everyone is okay, and kudos to your dog and quick-thinking DW.
I think a little extra caution is a good thing in an RV as they are not always built with the greatest care, and tend to have some semi-dodgy components. Not to mention an open flame in the fridge area when boondocking.
To that effect I always keep a bug-out bag next to the door when we turn in for the night. It's a laptop backpack with the laptop, keys (including keys for the ATV's that are parked outside a little way from the motorhome when boondocking) flashlight, wallets, cell phones and a sweatsuit for DW and I. Also have the cat carrier next to it.
My main concern is the propane fridge; my brother-in-laws MH went up while parked outside his house the night before leaving on a trip.
In the event of an issue late at night it's nice to have the necessities at hand - toss the backpack over the shoulder, cat in the carrier, and hop on the ATV's to get back to civilization.