بسم الله الرحمن الرحيم
(Fatwa: 91/69/SN=02/1437)
Fatimah is the name of the beloved daughter of the holy Prophet Muhammad, may peace and blessings of Allah be upon him. It is good name. You may keep this name. However, if you suffix al-Zahra and name her as Fatimah al-Zahra it shall be good. There is no harm in it.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
