Hmm, if I may...add my two cents.
I finished a femShep playthrough, currently working on my male one who romanced Ashley. With the latter, I'm happy with the interactions so far. With the former, I'm inclined to believe we are...blocked out a bit with characters we don't romance.
I was disappointed I didn't get to have a full fledged conversation with her on the Normandy...but then I remember her interactions were spread out through the game. We talked twice in the hospital, then at the memorial when I supported her and her sister (who honestly looked like she'd sooner pass for my FemShep's sister than her own XD) then there was that time she got drunk, and we talked at the cafe. As opposed to the...two or three full fledged conversation we have with Tali? I invite her up, there's one on the Citadel with that clerk...those are the only two that come to mind that start up cutscenes.
I don't think the Ashley we knew and loved is gone. I refuse to believe that. I try to simply conclude that with the gravity of what's going on, there's simply not enough room for idle chitchat. Plus, at this point, the two know each other pretty well, so there's no need for reintroductions. I think there was just enough to show the Ash I've come to care for is very much in tact.
That said, I did feel there was a...slant against her. I'm really hoping I missed the part where Liara or Garrus says to Shep, "It's good to have Ashley back!" because I only got regards of her return from Joker and he was...not exactly happy, which bummed me out, even considering the circumstances. Is it because of that coup incident that Ashley is isolated? Is it on purpose? I mean, how nice is it that Garrus and Tali get to talk about the good old days--Ashley was there for a chunk of that time, too! Why can't Garrus and Ash talk about their family; they could have bonded over sisters, or with Tali over their fathers. So much wasted potential; it felt like the rest of the crew was making a clique and excluded Ashley.
Now I'm hoping bringing her to more missions will help remedy that situation, but it remains a bit disconcerting. I was thrilled when I brought her on the Geth dreadnought and she and Tali seemed very friendly...although it's tainted by the fact that, if Shepard leaves Ash for Tali, they become extremely hostile, and while Ashley is the instigator, she ends up getting dissed and looking like the bad guy. And for what? For having feelings? For wanting to get things in the open? For being rejected for someone she probably never expected it from? I suppose I should take comfort that it will never ever happen in any playthrough of mine but...that really breaks me heart.
On a lighter note, I am grateful the game acknowledges the relationship formed in ME1 and my decision to stay true to her. "Ash...it's always been you." Just a little sentence, but I thought it was very sweet.