I know EXACTLY what she is!! She's what my mare is! A Canadian horse! People said my mare was just a 'perch cross'
I found her breed in just 1 horse book, they are about 15 hands, have one hell of a neck, are the ancestors of Morgans, mine has the common problem within the breed of having a bad reaction to bug bites. Big heart shaped bums are another characteristic. They look like short, round, stocky friesians (IMO). I thought she was a huge Dales or a tiny percheron too! Look up Canadian Cheval and Canadian draft horse and you'll find all about them!
I'm so excited to find another Canadian owner ^^ Canadians rock!!
This is mine showing off: