Reference: Fataawa Muhimmah li-Nisaa. al-Ummah – Page 66
Question: Is the menstruating and postpartum bleeding woman allowed to eat and drink during the day in Ramadhaan?
Response: Yes, she can eat and drink during the day in Ramadhaan, however, it is better if this is done out of sight [of others], particularly since if they have a child at home then this would cause problems for them [in having to explain their condition].