Fair enough. Still want to see all the cases of 50 year old women being stalked.
There are cases. I was stalked in my forties and a friend of mine had a stalker at 50-something. She's an amazing woman and the stalker, while probably meaning little harm, was in his 30's. I know several men who have been stalked in their 50's (by women). My stalker was a woman and it began when I was a bit younger - wasn't exactly "aimed" at me (she was after my ex-husband and it either was or wasn't "romantic" stalking but it continued after a divorce and escalated into her filing lawsuits so that she could have contact with my ex; I had to testify in that case). She actually wanted to *be* me so she could have my ex-husband and started stealing things from my office at work in order to learn about me and try to emulate me.
It was only after Suzanne disappeared that I went and looked this woman up (it's now been almost 20 years since her lawsuit was dismissed and I've not heard or seen her since - I've changed my name and I've moved two times; my ex changed cities altogether). I found out she had died. I have to say that I was relieved when I heard it.
And then there are the "stalkers" like the one in our neighborhood who used her video cameras to learn everyone's patterns and habits and then stole identity from 3 neighbors - IOW, there are many reasons why weirdos do what they do. Police did nothing in any of these cases, including the one with my friend. The only case where police did anything was one colleague (male). Even then, it was only to ban the person from campus, she still showed up at the guy's house.
Even after the enactment of stalking laws, few women report it. By using telephone polls, New Mexico estimates that over 17,000 women had experienced stalking in their state. Nationwide it's 1 in 1000 women.
https://www.ncjrs.gov/pdffiles1/nij/grants/228354.pdf
Since nearly no one reports stalking according to the above study (and others), it's hard to know the age of the people being stalked. Stalking is an obsession on the part of the stalker, and while obviously most stalkers do not end up killing anyone (intimate partners who stalk after a separation or divorce are way more likely to kill according to the above paper), I do believe it can happen to a 49 year old woman. My friend with the "romantic stalker" is still, at 62, an attractive woman who is internationally known in a particular sport. The stalker has moved on.
This study:
https://www.ncjrs.gov/pdffiles/169592.pdf shows that 15% of women who are stalked are over the age of 40.
It cannot be ruled out by using Suzanne's age, is my point.