Yep, it's reinforcement all over. Everything she does that does not shut him off completely, without notice, without any reaction, that is rewarding to him. I don't blame this girl for this, because she did the best she could, but from the outside it is rather clear how this works. The problem is probably mostly emotionally, on her side. For some reason she could not end it completely and hand it over to the police.
Sorry, but it does sounds to me like you are blaming the victim when you write "The problem is probably mostly emotionally, on her side." It's her stalker who has the emotional problem. Calling her emotions the problem appears to me rather sexist, given that women are stereotyped as overly emotional. Furthermore, she DID stop responding, and she DID go to the police, but they didn't do shit. Please read the article more carefully, and please don't place the burden of justice on the victim.
Perhaps the one that is absent from any group of older people in the mall because it dies 5 years earlier? The one that is most often sent to war? The one that has substantial more suicides?
"With Apple and Google unable to help ...".
She thinks Apple and Google should help with spoofed mails b/c an Apple mail client is used and the spoofed email was from a Gmail address.
Also not understanding identity theft:
"including Danny’s latest identity theft."
Also not understanding the difference between civil legal action and crimes.
In most western countries education about technology and how it works is insufficient. Same goes for law basics that help with life.
Edit: I don't blame this in any way on her.