14 was answered here.

15. Are they very fashion-conscious or more practical?

Generally more practical, though she likes decorative features on her armor to make it as imposing as possible - little spikes, ridges, and the like. She found a fair number of enemies would surrender at the mere sight of an eight-foot-tall qunari in grim-looking full plate. If formal dress is required, she’ll wear whatever Josephine tells her to wear. If she’s just lazing around with friends, she probably doesn’t even wear something as nice as the beige Inquisitorial pajamas. The closest Thedan equivalent to sweatpants and an old t-shirt is about her speed.

20. If they met, how would your Inquisitor get along with your Warden? Your Hawke?

Personality-wise, I think they’d get along pretty well. Both Faren Brosca and Brandon Hawke are also warriors with hearts of gold (that in some cases required some polishing) and a strong urge to protect and help people (that in Faren’s case didn’t come out at all until he starting passing time with Leliana). (No, I don’t have a type, shut up. I have two types, the other one is stealthy snipers.) Alya can be more severe than the other two - she probably would have executed Jowan and possibly Anders, which wasn’t their choice - but I think their basic worldviews are compatible.

Both Faren and Brandon would probably be alarmed by her combat style - they’re both more oriented on trying to control combat, keeping enemies stunned, off-balance, and away from their comrades. Alya’s more an unstoppable fountain of violence who reasons that her comrades will be safest if all the enemies are minced as rapidly as possible.

Alas, if Faren ever does meet Alya, he’ll probably be fairly pissed at her for letting Leliana (from his perspective) go totally off the rails. He didn’t fall in love with Murder Leliana (though I do hope he can remind her that she once showed him the value of compassion and kindness).