It is necessary to women to wait for adhan to perform prayer or she can pray without adhan if prayer time has started.
Answer:
(Fatwa: 1138/1138=M/1430)
If the time of salah is already due, the women can perform salah without azan as well.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband