Health-
First of all- Mazel Tov to this person on the birth of her baby.
Second of all- Giving birth is a traumatic experience on the body, finding out that one can bear no more children can be devastating. She may have had dreams of having a much larger family and it’s all gone.
I’m not justifying her behavior, I’m just asking you to excuse her.
This just happened a few days ago, please give her some time to cool off and get her thoughts together.