No, I'd never leave a small child or baby alone in an apartment with a locked door.
(and the ped started me on OJ at 3 months...yikes)
I think it's a case of "when you know better, you do better." My mom is horrified and defensive when I bring this stuff up, but it WAS the norm (70s, not 80s) I wouldn't leave my kids alone as babies...my own sense of responsibilities (plus legal) liability. Leaving your baby alone in an apartment is inviting social services to visit. Obviously, walking down the hall, etc to do laundry is a judgement call, but leaving for work for the day? I wouldn't go there.
Mama to DS (8) and DD (7) Aristotle was not Belgian. The central message of Buddhism is not "Every man for himself." And the London Underground is not a political movement.
I would have literally no problem with that scenario at all. All of the "what ifs" are very, very far fetched and the baby was well-cared for.
I knew a two ladies about 12 or so years ago would almost every day put their babies down for a nap. Both kids were around 1 at this time and then take turns going next door to each others houses to visit with each other taking a baby monitor with them. To me this is worse then what your MIL did.
oAlisha- eternal companion to mike:, mother to three energetic boys (02):, (05), and (07) and one sweet little girl 3/13. Two in heaven.7/21/2010, 11/05/2011 .