Thank you all so much for all your advice, please keep it coming, IMO one can never really learn too much.
Endiku just to quickly asnwer your question about why the mare was bred? It was an accident. Unfortunately at the time the mare didn't fully belong to me yet, she belonged to a worker on our farm who had bought her and her gelding partner for cart horses off another worker on a differetn farm. Round about christmas 2010 he went visiting with the horses on another farm and the guy he was visitings' stallion had his way with her. According to her previous owner the fact that she got pregnant is somewhere just short of a miracle as in all the years he owned her, she had been exposed to stallions, but had never fallen pregnant! Shorlty after the winter of 2011 after a year of failing to pay a cent of the money he had borrowed from my dad to buy the horses, Dad reposessed the horses and she officially came into my care. It was early in the spring that we realised she and two other mares on the farm is pregnant (the third mare doesn't belong to me, but to my DW) Sassy's mom, a pinto mare called Rain Storm got pregnant by a colt I thought I had gelded in time to prevent unwanted pregnancies.
I have had somewhere around nine foals born on the farm, unfortunately some fell by the wayside due to snakes, etc, some had to be sold, but four are living healthy, happy lives here on the farm. But it's been about three years since the last ones were born and I swore off breeding. A lot of them were due to cicumstance and lack of facilities only tamed as weanlings, but they never seemed to be of such a wild and fearfull temp. This one climbs the stable walls when I try and catch mom, then I'm barely looking at him.
I think a lot of time around him and mom is in order, will just have to do it early in the morining. Here in Postmas it easily reaches 36 C at 10 am.