Where in the article does it say the mother was not wathcing her child? Where does it say that the child was pulling or even touching the mirror? You don't have enough facts to draw these conclusions.
When I was in college I worked at South Coast Plaza in Costa Mesa. One day we heard this horrble crash followed by the sound of breaking glass. One entire glass plate window had fallen off the facade of the Gucci store into a main thoroughfare of the mall. It was near multiple benches where mother's stopped with their children to have a rest, etc. It was amazing that no one was injurred or worse.
Can you not see how these things can happen when parents and kids are simply doing normal things? And if someone had been hurt, Gucci would have absolutely been liable for it.
From the article: The mother told police she was about 5 feet away from her son when she heard a loud crash.
She heard not saw.
Where does it say that the child was pulling or even touching the mirror?
Mom, who SHOULD have seen, only HEARD. No one knows what the child was doing, do they. The article DOES say: was apparently playing near the 5-foot-tall mirror