Never turn down a good offer

I'm single again and well off still, my ex has remarried and so no more alimony. Child support payments are still required till he finishes college in 2 years or leaves early. I've an apartment near as I (47) could get to my workplace, I'm not into cleaning, so hired a cleaning lady. Who comes 3days a week. I work from quite a bit when I'm finalizing a planning proposal. My cleaning lady 36is a widow has 2 young children 8 and 5, she is okay looking but doesn't date, she hasn't the time too busy raising her two children and working to support herself and them. Then the older child had an accident on his bicycle and broke his arm. Ambulance trip and trip to the emergency room left her with a large debt. To cap it off she lost one her jobs adding to her financial problems. Not any of my concern, then one day I was home when she was cleaning apartment. She got a phone call a bill collector pushing her pay her bill quicker than she had already arranged. She said she was paying as fast as she could, she added she was missing meals to pay it faster and was looking for more work, but nothing was available for her. She hung up and said out loud I'll sell myself if someone would pay to fuck me. The door to my home office was open and I heard her. Having been a lifelong smartass, I ask her how much and what would I get for my money. She was shocked and ashamed, at the same time and took several minutes to compose herself. Seeing the grin on my face she responded with whatever you want I'm willing to give it a try at least once. Her response caught me a little off guard, but thinking she was playing along. I asked her to strip and show me her body, trying to shock her even more. Instead, she shocked me by stripping naked, I found out later she had decided to sell herself if I was willing to pay her. I liked what I saw enough that I got a hard-on seeing her naked. So, we went into my bedding and made a deal, the deal was she worked five days a week and provide sex three days a week. But instead of me paying her like normal I pay medical bills. A number of fucks was agreed for payment of the bills, at three days a week it would take several months. There was no limit on fucks on the days we fucked one or more was the deal. A month into our mutual agreement, trouble found her again. This time it was her apartment building not up to code and it had a fire. Those her apartment wasn't damaged; she had to find another place at least till it was brought up to code. She knew of course once it was up to code the rent would go up as well. Finding another place would be hard as there a shortage of rentals locally at the moment. I've a three-bedroom apartment plus a small office/den. She asked could they stay until she found something else, adding she'll sleep with every night till she found something else. So, in early April her and her two children moved with me and are still living with me still. Her first arrangement with me was fulfilled in July, her second arrangement is still running it course, no extra money to be paid by me. She can't get pregnant anymore she had her tubes tried. I'm not any hurry to have her move out either. I like the easy relationship we have, sex a couple of times a week. I also enjoy play with her children. The only major change is she only works for me now, no other cleaning jobs, she is also my companion at events when I require one. Our business relationship has matured into a sort of boyfriend girlfriend type of relationship. Without us stating it