It is in the best interests of everyone that a firearm be safely stored, unloaded and locked up, especially when children live in or visit the home.
"Everyone" would include intruders.
I'm sorry for this lady's loss. Her story is tragic. But it does not make her an expert on gun safety. If she was, she'd know there is no one-size-fits-all panacea that works for" everyone," and that is appropriate at all times and for all circumstances.