ObeyGames Thanks for your reply. Might have missed it as I never sent the slave to the mines as I thought that would be like dismissing him and not as a form of income. For income I sent him to prostitute himself.
As I had studied the book already my mistake was to not send him to the mines? Will check that out.
BTW, I might have found a bug with the landlady. Usually I could pay the rent but quite far into the game I could not so I had a debt of 300 bucks. The week later I had enough money for the rent + repaying the debt but got 2 prompts from MC: Yes, I have (for the weeks rent), immediately followed by: 'I didn't (for the debt) and the landlady said something to have the money ready for next week, but after that, the scene did not have an exit prompt. Hitting the return arrow did nothing as it always prompted back to the same scene. I had about 2000$ cash and I should have been able to pay those 600$ without problems.
Initially I went into debt with the landlady to see if it would trigger a lesbian scene if you could not pay the rent similar to the scene with the parlor's boss.