Hello,
First of all, congratulations! Much joy!
In my opinion, the right approach is to speak with her calmly and honestly. Ask her what she truly wants.
It is very possible that after two days in the hospital she wants to be in the warm and familiar home with the family. The quiet and being alone may no longer feel so pleasant to her.
In this situation, your role is to be there for her and meet her needs. “Whatever makes you feel good, my dear…”
Give her the feeling that you trust her judgment, that she knows what is right for her and that she is mature enough to make the decision.
On the other hand, don’t forget that you are only human as well.
Is it difficult for you to go and bring her now?
Would it be easier for you tomorrow?
So talk about it.
She has a need and you have a need. Find the balance.
Don’t forget that she is after childbirth—weak and tired. There is a chance her reactions will be different than usual.