Answer
It is Mustahabb (commendable) for females to circumcise. It is narrated in
an authentic Hadith quoted from Abu Dawood Shareef that during the Prophet
(Sallallaahu Álayhi Wasallam)’s time there was a woman in Madinah who used
to perform circumcision for women (Fathul Bari vol. 16 p. 353)
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai