Is anyone else confused by Sera's fascination with the Qunari? She seems to have a interest in them. I figured someone like her would have a strong dislike for the Qunari and the Qun.
It's possible she interacted with a few Vashoth before and found them attractive. She did live in Denerim for a time and I'm sure more then a few popped up.
Some people have said that her views cross over into fetishizing, but I can't speak to whether that's the case or not.
Though for the Qun itself, I'd say she doesn't care for it, given that she says to Bull "You're not gonna try to convert me are you?". When he laughs, her following comments are... well it's more because she doesn't like being told she's not cut out for something. She finds it insulting, and more importantly it plays into her fear of nothing. She fears that she will amount to nothing in the grand scheme of things (I suppose it's due to her being an Elf in a society that says Elves can't amount to much, where even Dalish Elves call her a flat-ear?).