Several suggestions

Searching parks might be fruitless unless you could narrow down a general direction. If you couldn\'t find that information from her friends, then you might have to trace her travel on Friday. Since she takes public transit, I would recommend you start from there. 1. Get a recent photo of her, write a description (age, height, weight, etc) 2. Have a clear description of the clothes she wore on that day, color, style 3. Combine 1&2, make a lot of photo copies 4. Find out when she left the apartment building from the tape on Friday 5. There is a bus loop at Lougheed Town Centre, estimate the travel time on foot from her apartment to bus loop, bring item#3 and go talk to each driver whose bus departs within the same time block on Friday. Ask them if you could leave a copy on their bus 6. Hand out some more copies at Skytrain within the same time block It is kind of like finding a needle in haystack, but maybe worth a shot if you don\'t have other lead at this moment. Good luck.