Aria: ...You'll have to leave the Normandy and its crew behind.
Shepard: My crew are professionals.
Aria: Let's just say I want you all to myself...
Well, Aria...You have to deal with LIARA FIRST
. Then, we'll see.
This is just my silly interpretation after watching a Let's Play of Omega DLC. Hah.
I wish we could bring Liara to this mission and see her reactions or possible dialogues with Aria. But, we have Nyreen and I like her.