Is this day 65 from first breeding or last? I know this waiting is really, really hard (harder on you than on your girl) but if she is not overdue from the last breeding and does not seem to be stressed, it is really better for everyone to just let nature run it's course. As Mardelin said " it will happen when it happens".
I know from experience, that after a week or so of just sitting there staring at your little girl, you start to feel a little wonky.