Frankly, I don’t have much sympathy.
Because the issue is not about stalking or guns; the root problem lies elsewhere.
It’s about two things: social media, and young women’s focus on careers.
If young women weren’t putting their personal information, their hopes, dreams, plans, out on social media for all the world to see, a stalker who meets them working as a teenager in a café would not know their plans, as to where they were going to be going on even a given evening, much less when and where they’re going to school, what they’re studying (to be able to potentially find out where their classes are), what residence or neighbourhood they’re living in, etc. People, esp. women, on social media give far too little thought to the consequences of putting out all their personal information, stuff a stalker might find useful in stalking them.
Of course, a young woman of middle and upper class background who is NOT bent on a career requiring higher education, also might well not be working at a café at sixteen to try to raise money to pay for it. And we patriarchal reactionaries all know that society is the worse off for women delaying marriage and childbearing in pursuit of higher education and careers; society would be far better off if women’s priorities were much as they used to be, NOT regarding a high-paying career as the ultimate achievement to which they should aspire. And a working-class woman would probably end up working NOT during her high school years, but after them, at something like a factory job as they’ve long done, but not have that be the ‘end-all, be-all’, focus of their lives, making room for meeting a husband and raising kids.
Thinking about this particular situation: the guy got arrested, and is in jail, and may well end up sentenced to four years in prison.
Let’s say she hadn’t moved away, but as he stalked her locally, she was just as able to get him arrested and imprisoned.
A woman not blabbing about her life on social media AND not going away to get an expensive Ivy League education, who was still afraid of him stalking her on his release, could change jobs, and/or move away, and/or potentially concealed / open carry a weapon as she desires if she’s living and working in a state that allows such, and/or find a nice guy, get married, and entrust her protection ultimately to him. And while still at home, in a more traditional society, her father would be her protection, and hopefully see himself in such a role, rather than pushing her towards / being okay with her decision to pursue higher education and a high-paying career.
There will always be stalkers, unfortunately.
But different societal circumstances would lessen their opportunities, which would be a good thing in itself.