Excellent points!
As to the location of the call, I've been thinking that it is highly likely that bar was frequented by plenty of Dofasco workers who probably knew each other or at least had interaction.Since DW and CV frequented the bar, chances are they knew a lot of Dofasco workers too. Former Stoney Creek resident Doug Shaw knew both DW and RB http://www.thespec.com/news-story/2225147-witness-places-badgerow-and-victim-at-same-bar/
So if many knew each other, chances are CV knew Dofasco workers too. Anyhow, just saying word could have gotten around.
Even Debbie Robertson's boyfriend worked there--beside RB apparently. (I hate that the Spec wants me to get a subscription to read even old articles, if I was getting paid for sleuthing I might subscribe, but I'm not so can't afford it). I didn't catch Debbie's fiance's first name, last name Gillespie.
I like your point Deugirtini that the caller 'thought" he was being helpful.
Right now, I'm thinking if RB didn't kill her by the ravine, the only purpose for her murder would be a jealous SOB who may have seen her leave RB's truck, followed her and let her have it. There was no second sexual assault.
After writing the above, however, I pondered, if she left RB angry, she would have dressed herself and he 'could' have followed her and still murdered her. Just thinking. (speculation)
Fiesta Mall in Stoney Creek doesn't seem like it was that close to Dofasco to have been a huge steelworker hangout? According to googlemaps it takes about 15 minutes to drive there. And i think it's doubtful that many might know one another from work, even if the bar had been filled with Dofasco employees. According to stats there were approx 30,000 steelworkers (between both Stelco and Dofasco) in 1980, but the numbers started being reduced in 1981.
https://www.google.ca/maps/dir/ArcelorMitttal+Dofasco,+1330+Burlington+Street+East,+Hamilton,+ON+L8L/Fiesta+Mall,+Hamilton,+ON/@43.241308,-79.8150779,13z/data=!3m1!4b1!4m16!4m15!1m5!1m1!1s0x882c994b35cd4755:0x587ee6f71ed8cc93!2m2!1d-79.8112929!2d43.259268!1m5!1m1!1s0x882c9885000a6d43:0x8a7283ec83799fe4!2m2!1d-79.7486523!2d43.222609!2m1!1b1!3e0
https://books.google.ca/books?id=DT...ow many employees dofasco had in 1981&f=false
Hamilton was 'steeltown' back then.. not convinced the workers would necessarily know one another.. they were huge places with tens of thousands of workers.
I do however, think it makes a lot of sense to theorize that DW's bf could have potentially shown up to surprise her that evening after work, at malarkey's, where he knew she'd be... and instead, saw her getting out of some guy's truck.. followed her.. and exploded with jealousy/whatever.... no sex happened, as suggested earlier. Was that possibility even pursued, or was it taken at face value that the bf had gone away for the weekend?