Even without the full story i still feel like zipping him up in his car seat and completely covering him wasn't right also. She didn't do anything other then tell everyone she didn't know what was making him cry so much!
There's nothing wrong with being upset but you must know the whole story first
That is sad, a small baby needs frequent changes and feedings. That poor baby was probably crying for food or a clean butt. I would have said something because I just can't help myself when it comes to kids. There is nothing wrong with you being upset.
The baby might have been suffering from colic and there's not much she could have done unfortunately, only stay at home until the baby grew out of the colic which can take months. This might not be the case but remember just cos baby's crying doesn't necessarily mean she's a bad mom