your daughter is already 4, & her little brother is only 2mth old, I don't think it is a good time to force her sleep alone now.........her lifestyle just turned upside down & she will only think her brother is a threat to her.
since she can sleep with your maid, then u have to let them sleep together la at this moment in order to have a peaceful relationship among your family. Rome wasn't built in one day gar......if u want to train your daughter, it takes some time gar. If u think the other way, let your daughter sleep with your maid, then everyone can have good sleep & she will have the energy to go to school in the morning. she will be easier to handle in other ways.
your thinking " 個工人晚晚十點有得瞓, 仲一覺瞓天光" is like some people think " since I have a maid/grandparents at home to take care of my child, I don't need to send them to school so early......." but how can they trust the maid to teach their child the same way a school will?????
I wonder what is the age for baby to sleep alone? After seeing the story 滿意媽 here alerts me of training my daughter early. My daughter is now 11mths and sleeping w/ a maid at night on a 子母床. Can anyone give me some good advise?