Whose to say he wasn't with them but left? His clothes have the same color scheme, both are from Tevinter, etc.
He is companion and was with inq even if they didn't meet before and they probably did but who knows she rather knew he wasn't with them but i didn't saw full demo so...
But not all of Ferelden is the group that captured her. That's like saying every every member of the qunari-race answers to the Arishok.
Same for mages or even tevinter it was just small part of it. To be honest i would see more realistic if she developed hate or distrust toward them after constant acting like total nuts and proved that they can't be trusted than simple torture.
The "boss" at the end of the demo was
SPOILERS FOR THE DEMO
I know but he left them so i rather doubt the was with them during torutre we don't even know when he left them but it had to be while ago he seems like guy that don't like open veil thing or magisters matters.
Nope, that's why it seemed strange to me. In the vanilla game she said the Orlesians tortured her. We don't really know if she's hating ALL the mages, or just those that tortured her. As we don't know if there are ulterior motives for she possible hatred.
She might lie heh i wouldn't be suprised. To be honest i rly hope that she won't pull cullen thing and will be more as i said and starts don't like them as she becomes less and less deluded that they deserve freedom or even trust well after all that crap mages caused it wouldn't be suprising at least.