Seems so silly about this leap, nothing was really that wrong with their relationship. Armaan was understandably upset with Abhira about putting the baby in a box but it seems to me like these issues could have been worked out and overcome. In what world does raising the daughter without a mother & family make sense?
Or maybe he actually felt Abhira poses a real and imminent threat to his daughter with her carelessness and having to share Maira with her for any number of minutes is a great risk to his child. That must be his actual state of mind or something. Anyways, knowing this show, he might not actually be wrong either but premise of this leap seems under baked to me.