Absolutely. Can't wait to see your pictures, so we can get a good look at the 'maybe' momma and the daddy. The pictures will help us see what she looks like from a variety of sides, etc.
Also, how tall is she? As much information as you can provide will help us make an educated guess for you.
I, too, have had mares that were said to be open, foal nice, healthy babies -- so don't give up! LOL