Movement after a c-section tends to be limited and painful, and should be avoided whenever possible. Normally, this is why having a partner is such an advantage. Some specialists suggest that the mother shouldn’t try living a “normal” life up until 6 weeks after her surgery.
This argument could be chalked up to just frustration boiling over, but his decision to lock her out of the bedroom and make her sleep on the sofa is too much. This would be too much if she was just looking after their child but the fact that she is also going through post-surgical recovery is just evidence that this man simply can not be trusted.