Although Dusty can be found at Spanish Point there is no guarantee that she will always be there. Her appearances are intermittent at best so don't be too disappointed if she is not there when you are, but take satisfaction in the fact that she is wild and has the choice whether to seek human company or not.
Jan Ploeg, who regularly visits Spanish Point (almost on a daily basis), has kindly offered to give up to date information of her last sighting for anyone who is planning on visiting her. You can reach him on email@example.com. He, of course, offers no guarantees but might be able to give indicators as to whether she is in the area.