Are the aforementioned actions considered mockery of religion that necessitates disbelief, and what are the resulting rulings therefrom, such as the obligation to renew the marriage contract? And does what happened from the father or colleagues fall under this category?

Satan whispers to you, so do not pay attention to that. Accusations of apostasy are a serious matter, and it is not permissible to proceed with them based on something doubtful. We do not see in what you mentioned any mockery that would lead one out of the faith. Judging an action as disbelief does not necessarily mean that the doer of it is a disbeliever, for not everyone who falls into disbelief has disbelief befall them. One whose Islam is established with certainty does not lose it through doubt; rather, it is not removed except after the establishment of proof and the removal of ambiguity.