I've never heard of this mod, not even with console commands. The easiest way to earn more money from your spouse quickly is to just wait a few days, they collect 100 gold per day, some times more but it's at random. If you don't collect the gold one day, it accumulates, so you can get a large sum at one time. If you're in a hurry just use the wait feature.
Also, if you've got the relevant perks you can gain the ability to invest in businesses which increase their stock and buying money. I'm fairly certain you can invest in your spouse's business, which should help with income.