2-3 months is barely enough time for you to understand her and vice versa. Definitely not time enough for you to have realized that you should seek divorce.
Did you meet her at all, before your wedding? How was her attitude then? If she is hypersensitive in your eyes, could it be that you are insensitive and therefore feel her emotions are extreme?
Do not look at her reaction and judge her behavior. Look at the complete situation and then decide. Newly wedded lady who does not know anything about your family and is totally new in an environment can feel overwhelmed by all of the attention and change in attitude from what she is used to. Not quite as simple to adjust in a new home. One can be nervous and scared at the same time and act in ways that are un-natural to them. Now, she might feel worse about how she acted and wonder if she will get accepted if she comes back so she will refuse contact altogether.
Also, you have said you do not want to take her abroad with you? Is this something you always planned to do that is, marry her and leave her with your parents or is this something you have decided on, later?