She's a lazy but smart maid, always know how to protect herself and complain about the workload.
You better tell her directly about her daily workload and ask if she can handle it, if not, which means she is not capable of the job. She has to know her assigned duties, she is not the one to choose what she likes to do and choose what she likes to eat and enjoy her life at your home, while your mother is working hard to look after baby.