It is difficult to imagine anyone possibly thinking this act was a good idea.
You have to have an incredibly low IQ, so low that you wouldn't be capable of leading a normal life, to think that a 'stopper' in an anus makes sense. A baby wipe is not in any way a colostomy bag.
It does make sense that object inserted into the anus would work itself further inside through normal mechanisms of that organ.
Assuming that you put it there in the first place, at the point you couldn't get it out you should be in a blind panic and heading straight to the hospital.
If the first act can be accepted as an act of incredible stupidity, the subsequent failure to act and additional failure to explain at the point the baby's life was in danger in the hospital, is criminal its callousness.
As for the subsequent events, it seems that the mother is unwell and she regards the support of her husband as more important than continuing to have a relationship with her children.