My original comment contains details from the article, so I'm not sure why you think I haven't read it.
Why I find the headline objectionable:
Emphasis on gender. Why does it matter that she's female, or how long is it's been since the last woman was executed? Is it any more or less significant / objectionable than a man being sentenced to the same thing? It's not trying to make some sort of analysis about gender trends, so I can only assume it's a device to invoke emotions.
Choice of wording about the quantity. 'A year's supply' would have made it very obvious to anybody browsing that this was not a casual user. Instead they went with the less accessible amount in grams, which makes it seem to those unfamiliar with drugs like it was a tiny bust.
Combined, the headline seems to be pushing a specific agenda, which I find deplorable (the covertness, not the agenda).