There were three people in this case - the murderer, the victim, and the murderer's "girlfriend". All of them male.
I just searched the latest BBC article, which now seems to have dropped "woman" entirely (it now begins with "A murderer who led a man to his death") and has one instance of "trans woman", to describe Ashlyn Bell, along with a couple of "transgender". But "she" is used 21 times, and "her" 4 times - strange, eh, for an article with absolutely no women in it.
The Metro likewise has one "transgender woman", 17 "she" and about 9 "her".
Guardian - one "transgender woman", one "trans woman", 18 "she" and 5 "her".
Meanwhile, the police statement that someone linked to elsewhere (can't find it now) was an astonishing feat of writing in that it was several paragraphs long but didn't use a single she/her, or he/him/his, or woman, or man, to refer to Blake.