There's also the small lane to the right of the carpark that I mentioned earlier (I've given up trying to add the link as I can't do it sorry) It runs behind Claremont St and gives access to their garages - there's a pedestrian gate access there near to the bench at the playpark that he could've pulled up pretty much right next to and dragged her through.Your grasp of proper English is coming on beautifully
On the map below you can see the square, ahem, parking lot, and that little section of Oak Road which has a path leading from it. There is a gate but I've no idea if it's locked. It's not a very high gate so if someone wanted to get over it they could.
Google Maps
Gardens searched as police enter final hours to quiz man over Libby