is a communicable disease ie it spreads from person to person. In your case the chances are less as you have mentioned that it is min PTB. You have not mentioned whether a sputum test was done for your maid and if so was she sputum positive. If sputum was negative the chances of spread are less but it cannot be said definitely that spread has not occured . TB spreads by airborne route and closeness increases the chances of spread. I hope that she is being treated with Anti Tubercular Drugs by which then again chances of spread are minimized.