Giolyn,
i had the same experience as u, in terms of maid.
Mine also wakes up at 5am to do housework, even though i told her no need to.
Yes, my maid also eat little. Anyway, on her 1st week, i gave her my review of her work. I told her, she has to take good care of herself and that includes having sufficient rest and food. If she eats too little and no energy to work, she cannot do her work well. I leave it to her lah. I provide 3 meals to her, gradually i realised she eats more for breakfast, but lunch and dinner, she eats little.
and hor, i noticed tt sometimes my maid likes to work and work, keep herself very busy, so tt she will be homesick. She also admitted to me, she tried to be very busy.... I think she takes time to adapt herself. My maid told me tt sometimes she's bored, cos not enough work for her. I told her, now baby still not deliver, that's y not so busy. When baby come out, will be very busy liao. She look forward for my baby's arrival lah... hahaha