well, pretty sure. your wife is the one having issues as she:

1) Never appreciate that by marrying you, her future and children are secure. 30k / month is the 0.1% of the goldmine already.
2) As she is working, she should be doing workhouse together with you, as both are working.
3) She is working 9 - 5, so should time to support you as are the bigger breadwinner here, because i think if your wife earns like 300k / month, u will be scrambling to support her.

Also, i think you can better educate your wife about being financial savvy:

1) Get her to understand about old age expenditure and the children's education. give her the raw figures for her to see
2) Explain investments to her and there is no such thing as get rich schemes.

Lastly, sometimes if you want peace and want the marriage to survive:

1) Tolerate her, give her the allowance of maybe 2k-3k or at least 5% - 10% of your monthly to her, just to keep her happy.
2) Need to have give and take, if she keeps on taking only without concessions, i think you know where this is going.