I'm new at this, but if i go by Misty.........and what i have seen in the past day with Sugar, i would say that she should have it any time! Then again I could be totally wrong.
James and I both thought she was about to have it (as described earlier) when she got "wind" of us and got up promptly. My friend said this happened to her too and the mare waited until she was sure no one was around. I am keeping away (but watching through binoculars) so as not to disturb her.
Adge is growing so fast, he seems to be Lightnings color and is short in the back like him. He is nibbling at mare and foal feed and hay. Misty seems to be quite happy to share her bucket with him! We will however get him one this week (and a new one for Sugar).
Home from work now - it sounds like you feel that she is okay, that's a relief. Please let us know what's happening.