Plausible, so far....
604 number, OG BC area code
The timestamp looks recent, not sure about the one on the pink sign, looks a bit shopped or it's just the colour and quality of the photo.
She was 23, three weeks ago...using the same photos with timestamps there too.
Don't see any multiple ads for any other city on LL.
I won't verify it, but certainly warrants taking the next step and texting her.