Can a woman pray naafil when the iqaamah for prayer has been given?
Question

                Is it permissible for a woman to offer a regular Sunnah prayer before an obligatory prayer, such as the Sunnah prayer before Zuhr, when the iqaamah (call immediately preceding the congregational prayer) has been given?

A woman is not obliged to offer the prayer in congregation like a man, such that she would have to stop or delay the Sunnah prayer that is offered before the obligatory prayer and offer it after the obligatory prayer in order to catch up with the congregational prayer.
Praise be to Allah.Muslim (710) 
	narrated from Abu Hurayrah that the Prophet |(blessings and peace of Allah 
	be upon him) said: “When the iqaamah for prayer is given, there is no prayer 
	except the prescribed prayer.” This applies to the one to whom the command 
	to pray in congregation is addressed or to the one who is present in the 
	mosque when the iqaamah for prayer has been given. With regard to the woman 
	who is in her house or a man who is excused for not attending prayers in 
	congregation, they are not addressed in this hadeeth, so they may offer the 
	naafil prayer even when they can hear the iqaamah from the mosques. 
The same 
	applies to a man if he wants to pray in a mosque other than the one in which 
	the iqaamah has been given; he may offer the naafil prayer in his house. 
It says in
	Kashshaaf al-Qinaa‘ (1/460): If the iqaamah has been given, i.e., the 
	muezzin has started to give the iqaamah for the prayer the he wants to offer 
	behind the imam (then he should not do any naafil prayer), otherwise he may 
	do so, such as if the iqaamah is given in a mosque in which he does not 
	intend to pray. This was stated in al-Furoo‘. To sum up, there should 
	be no prayer except the prescribed prayer (after the iqaamah has been 
	given), so he should not start any naafil prayer or any regular Sunnah 
	prayer, before Fajr or otherwise, in the mosque or elsewhere, or even in his 
	house, because the Prophet (blessings and peace of Allah be upon him) said: 
	“When the iqaamah for prayer is given, there is no prayer except the 
	prescribed prayer.” End quote. 
For more 
	information see the answer to question no.
	33582
And Allah knows best.