Would it be more palatable if you could portray the Dalish Elf in a way that was less racist and more willing to be collaborative?
Well yeah, but then it would go against everything it means to be a dalish. Being dalish is about rejecting all things non-elven and especially anything with human involvement in it, and having a predisposition to it as inferior. It's about hating humans either for taking away a supposed immortality, enslaving them, not falling over easily after the second blight for them to take over, or for still being mad at them after they already beat them so thoroughly. Isolating and rejecting all elves who live with humans unless they come crawling back to them and begging to be let back into the clan, and being very, very, very, ethnocentric and racially minded when making judgements and decisions. Your pretty much living a survival game in a post apocalypse if you're a dalish in the human lands, and you can't afford to have understanding or empathy for these invaders that you have been taught will have no sympathy for you.
Not being concerned with the cultural purity of the elves and open to working with uncle tam elves of the alienages, or creators forbid humans, would be paramount to heresy if you're going to play any sort of dalish seriously. A dalish inquisitor would be likely to spit or attempt to shank the divine before ever agreeing to work in any sort of tandem with her and her false religion. The clan come first, and foremost, and everything else is just a minor distraction or inconvenience.