You do not say how long you have been married, how many children there are and how old they are. And, of course, roughly how much you earn compared to your wife.
I suspect that you attach too much weight to so called 'pre-marital assets' in your particular circumstances. There is a world of difference between
A. The case of a marriage which lasts for a year, both parties earn about the same, there are no children and one spouse came into the marriage with substantial capital.
B. A marriage which has lasted for ten years, where one spouse earns much more than the other, there are three dependent children and the spouse who earns more brought substantial capital to the marriage.
In the case of A significance is likely to be attached to the fact that the capital was premarital. In the case of B it is very unlikely that it would have any significance.