OK, I've read that in Hard Target indeed, but somehow it gave me the impression it was a recap' from an other source. But again an event with no actual date (even month will do). As Hard Target is released on Jackpoint on the 28/11/2077, and there is no mention (IIRC) of her death in Bloody Business (7/2/2077), we can assume it happened somewhere in between.
Honestly, it would be nice to have some dates and an official chronology up to date. I'm pretty sure people at Catalyst actually need that anyway, and it would help us (GMs) to not get our wire crossed...