Did you check the wiki about these events Kylie#Stalking_events
Viewing post in Love & Sex : Second Base comments
Yes, I did.
I have triggered the events "Stalking" and "Kylie is a stalker", then chose to talk to the policewoman (she sent me away as supposed), then talked to Kylie (she regretted).
Then "Nightly assault" got triggered, Kylie tased me, Bree and Sash came to the rescue. After that, I went to check on the spy cam but there was no button for that on the front porch. Also, there was no-one at the police station (just empty rooms).
To solve this, I tried to re-trigger the assault, but the only thing happening is that I can see someone in the bushes at night and get some stalking footage (which I can't deliver to the police because no-ones there).
Kylie has 50 pts of Yandere - I've also tried to lower this (via hypnosis), then push it back to 50 by kissing Ayesha in front of her eyes... no result.
It seems like the event chain is broken.
Potentially yes, but I couldn't really double check.
I've updated the game, loaded the last save and was able to trigger at least the stalker scene again, including police report. But after that, it was stuck again.
My guess is that this is caused by my save game state (Kylie is already at 50 yandere). To verify, I'd have to dig up an old save game with lower yandere and go through all scenes from start. Or lower yonder via hypnosis and raise it back to trigger level. But I haven't had time for trial-and-error-stuff yet.