In the pic she still looks fairly tight. Has her belly dropped? When she's with in a day or two, her belly will drop and draw in. She should look a little empty around her loin edge. Also, her labia will get really loose and Jello like. Starting about 2-3 weeks out she'll get really puffy back there. Hard to tell in the pic, but I don't see any of that.
I find "checking ligs" difficult if you don't know what the doe usually feels like. Best way for me is visual. The tail seems to raise and appears hollow between the hip and tail....almost like a thin boney look, if that makes any since.