[user104658]

Cracked ribs are to be expected if you have to perform CPR on a baby that young, their bones are still soft.

However, we're not really getting the full story so its hard to say if they're justified in being angry. Was the baby given food that was too hard / tough for them to chew in the first place? Were they being properly supervised while eating? Did the staff handle the explanation of what happened sensitively or were they dismissive arsehats about it? Were they understanding of the fact that the parents would understandably be shocked by what had happened, or did they go straight on the defensive?

Can't really judge without the answers to those questions, TBH... I can't say my anger would be totally soothed by the fact that a staff member saved my child's life IF their life was only in danger in the first place due to staff negligence...