I have some of those type of wide load pics, in some cases w/ foals the next day, too!
I am not as familiar with foaling issues in the smaller mares/mini horses since most of our Shetlands have been significantly larger, but this forum is GREAT at support, teaching and just BEING THERE for you when needed.
I love the pinned threads and reread them every time I'm getting ready for a birth - to prepare myself so things are "automatic" if necessary. We are getting ready for 3 maiden mares to foal, one of whom is much smaller than any other mare I've ever had/been around to give birth. I'm getting "antsy" over her... guess it's sorta like the first time jitters, but I plan on reading the posted topics (again) and may end up putting her in a temp stall/pen close to the house for her to foal in. Don't know yet...
Thanx for posting the pics of your mare - she's a cutie! What are her and the stallion's bloodlines? Are you looking for a show horse baby, a future driving horse, a little "work horse" or a family pet (or all of the above combined into one)? Are you going to do a "name game"?