Is there a way to tackle the interpersonal problem of perception (regarding time invested in work) here by presenting a nice spreadsheet showing time worked and linking it to income appearing in the bank account? I'm not sure whether this would solve the problem rather than just create new ones, but if I was a freelancer and my significant other was suffering from misperception my first instinct would be showing them the data.

Of course, if the underlying issue is that they want you to increase your income target, then that requires a different solution.