For media reports on the case of Janet Gardner, see:
Paul Myers, “Appeal court frees woman who killed in self-defence”, the Guardian, 30 October 1992
Heather Mills, “Battered woman is freed over killing”, 30 October 1992
https://www.independent.co.uk/news/uk/battered-woman-is-freed-over-killing-1560359.html
For an academic discussion, see:
Aileen McColgan, “In Defence of Battered Women Who Kill”, Oxford Journal of Legal Studies
Vol. 13, No. 4 (Winter, 1993), pp. 508-529