So I had a cleaning lady today by my house that a friend that stopped using here offered that I could use her, now she came and before she left she told my wife that she could come on Thursdays if my wife wants, now that was obvious that someone else has her now for Thursdays (as it's a high demand day) now my wife called up her friend asking if she knows if the cleaning lady is booked for Thursdays so far, and she said yes she knows by whom and she knows that she (the cleaning lady) doesn't like that person so she is looking for a different person to hire her,
Now am I allowed halachakly to tell her that she could come Thursdays even if I know that that person is going to stay without a cleaning lady?