Heard a native saying: "did you see where she had a baby??" refering to Facebook

I am Spanish and my fiancé is from the States. The other day we were hanging out with his mum and she said the following:

"Did you see where Emma had a baby???"

I was very confused because I hadn't seen Emma in ages.

So I asked her what she meant, and she laughed and she said that that was an expression meaning "did you see on facebook...?" Also she said that it is kind of an antiquated expression and that people used to use it referring to newspapers as in "Did you see where so and so did this?"

So I tried investigating this phenomenon because I love the English language and I wanted to learn exactly how to use it... however I haven't found anything relevant on the web.

Can anybody help? How do you use this? Have you ever heard it before? Is it just a local expression from their state-MA-? Would you use it? Is it acceptable? IS it slang?

I know, too many questions.... but any information you can give would be greatly appreciated!

While the term where most commonly refers to place, it is also used as a conjunction to mean

That:

do you see where the men in your life are emotionally unavailable to you?

I see where the hotel has changed hands again

Oxford Dictionary Online

It is considered informal and is almost always limited to speech rather than the printed word (except when reporting speech).

It has nothing to do with Facebook or other internet usage.