Your question is really no less nonsensical, to be honest. Clearly, that poster was using "Reeva" in place of "the woman about to be shot". It's nice to name the actual victim of this crime from time to time rather than the fake "pity me, pity me" one.
And really, all you're doing is disputing "Reeva" rather than "female" - and that is highly pedantic.
Thank you for your opinion
However, whether the original poster said 'Reeva' or 'the woman about to be shot' or 'female', the point remains. It is not a fact of the case that has been proved and accepted that the screaming the neighbours heard was that of reeva.
Reeva is usually referred to by name on here, so your 'it is nice to name...' comment is thankfully unnecessary, as the same sentiment - valuing the significance of her name -is already shared by most posters.
Maybe I am a bit pedantic, yes. But when discussing a case like this, i'm sure you would agree that it is important that what is presented as fact has been proven to be fact