It took you a while to really look at her. Your first meeting was abruptly destroyed by a firefight with a krogan merc in a frighteningly unstable prothean ruin. A little hard to take much else in when you're trying to keep your balance with the earth shaking above and below, and some alien is shooting at your head like he's trying to win the giant varren toy at a railway booth.
You still didn't really look after you got out of there alive – Ash had taken a pretty bad hit and you had your head down trying not to fuck up a medigel application, waiting for extraction.
You couldn't help but look when she almost passed out in front of you. You were being an ass and riling her up (because isn't that just what you do to people?) and she almost went down right in front of you. You tried to catch her, but she caught herself first and said she needed some rest.
Everyone agreed and that was that: Dismissed. But you were looking her right in the face then, and Jesus Fucking Christ how could you not have noticed her before.