The good news then is surely that this little mare at least isn't contributing to the Welsh D nutty gene pool. Like I said in the OP, she'd probably be a broodmare as we speak if she hadn't had complications with the delivery of her first foal and lost the foal.
They are sparky, athletic wee things. When the horse goes well (between bouts of spooking terror), she is so very nice.
I do wonder what goes through people's heads when they, as novice horsepeople and first-time buyers, jump to buy the first thing they see and "fall in love" with, but without educating themselves about the breed or assessing the temperament/training of the animal in question and whether or not it is appropriate for a novice. Most of the people who I work with fit to one degree or another in this category. Luckily, most of the horses, while young, are pretty forgiving and not very complicated (except for this Sec D mare) so it's not totally disastrous. But I always want to ask, "Why??? You could have made your life easy and bought an 18-year old schoolmaster!"