I haven't read all the replies yet, will go back & read after posting...

I think primarily it's an error in judgement. It might be common sense to most of us - cigarettes are poisonous whether lit or unlit etc - but what I get from this is that maybe she just didn't think of that?
I don't see that she intended any harm, just maybe that she was ignorant as to the dangers.

So then if the intention was just a bit of 'harmless' fun & she didn't know any better - would you judge her for that?
Or lay the blame at a society which has left a young mother thinking this is ok?

I have recently seen people I know become critical of the way a younger acquaintance did things with their baby. But they had no family support, no-one to show them any better way...it's up to the rest of us soemtimes to GENTLY say '....no, not like that...here's another way...'

Davey returned to the scene of the crime (Facebook) to offer her insightful analysis of the situation in a special language understood by her fellow friends and status updaters.
- my first thought was 'there's one for Lamebook...'

ETA -Poopie, exactly that
and Beckoes - OMG