Contact the anonymous hackers of 3 chins or hire some bitcoin bikers.
edit. I guess I'm getting soft, so I will give some actual advice. If the cops are being chuds then she needs to go to the media and cry. Get logs of what the stalker has been saying and get on video crying as she reads it. Getting called out on the local news will spur some sort of action. Go through social media if she has to. Call her state reps, the mayors office, the governors office. Scream it from the rooftops to name and shame the guy. She should get trained with a firearm if the dude is this unhinged. No idea where she lives, but I live in a rural state and there are three shooting ranges within an hour of me, that I know of there could be more, which offer ladies only shooting times, ladies only classes, female instructors, free instruction nights for women. If she is going to go that route she needs to find other strong women to learn from.