The truth is maids do bring men home when their employers go away, though to be fair, they do comprise maybe only 1% of the total.
The attitude of the employer is important. If she lets it be known that she will send the maid home (no transfer) for crossing the line, the chances of the maid bringing someone home are much reduced.
Some maids are so street smart and so daring and wild they will break the 10 commandments and face the music if and when they are caught. And they may get away because the employer does not know how to handle them.
For example, Maid Phobia (in some other forum page) has described how she had to reinstate her maid after cancelling her work permit because the latter refused to board the plane and the police could not help. Of course we all know that employers are under obligation to Immigration to repatriate the maid when the work permit is cancelled. But how do you get her on the plane? Read what Wendy says in the same forum in response to Maid Phobia. (In this case Maid Phobia did not fire her maid for some other reason.)
To get back to your immediate concern, there are two possible approaches you can take. You can either come right up and say: "If you cross the line I send you home, no transfer" and risk a stressful confrontation just as you are preparing to go away.
Or you might tell your maid, "If you need help or advice when I am gone, call Mrs X, my friend." Meanwhile you ask your friend Mrs X to call her now and again to "see if Maria is doing okay." This is not foolproof but what have you got to lose.
You can also tell the security personnel if you live in a condo to keep an eye on your maid. Some security guards will not let a non-resident male enter the condo complex. And you might ask the security guards to keep an eye on your maid. Remember to bring home a souvenir for him or them.
As for food, just ask yourself how much you need to eat in one week. I think $30 for the whole week is plenty.
