So this is how a young woman followed the lies for two hackers, and died.
This is:
"How A Young Woman Followed Two Hackers' Lies To Her Death"
The apostrophe after "hackers" shows that the lies belonged to the hackers. The phrase "Two Hackers' Lies" is a noun phrase, it's a thing, it's the collection of lies told by two hackers.
Does that help?
I was expecting a story where two guys tricked a woman into making her own diet pills from castor beans or something. Which I imagine was the point of the title. I may not have clicked on "A boyfriend and his buddy killed his girlfriend."
You can't "follow lies" literally -- I'm not sure what the figure of speech is here though. Metonymy?
So when someone tells lies, and you act on the (false) information therein, then I think it's reasonable to say that you are following the lies.
The lies belong to the hackers
A young woman followed those lies until she was no longer alive
This would be the worst place for a semicolon