the horse thing is totally bugging me, haha. but i am now fairly sure that while nynaeve’s horse isn’t Bela, Bela was not mashadared either. when Tam is brought in on Bela, the horse has no conspicuous white star and does have two white socks on hind feet. later I saw Egwene on similar horse...
i noticed in the trivia somewhere that the Two Rivers was a region with four towns (including Emond’s Field) but it doesn’t seem like the show is always consistent with the trivia.