Ugh, she's so fucking annoying though, and she quotes shit poetry at you. Although to be fair, neither of them is worth shit after they basically turn on Shepard in 2 and start questioning him and his motives / loyalties. That was some bullshit.
Kaidan is a "risky" choice to save though. In one of my playthroughs I had a weird "bug" (or something) occur :
Kaidan, my wounded war buddy and comrade in arms is laid up in the hospital after being manhandled by a killer android, so I visited him. Then I brought him some booze on a subsequent visit. Then we went out for steaks and beers once he was healed up. Totally normal interaction between 2 soldiers, right? Well, then the fucking romance music started playing during lunch. I had somehow stepped in the gay by doing all that stuff. And bear in mind, my male Shepard was in a committed relationship with Liara since ME1 for this particular playthrough (it was a throwaway save).
Long story short : don't visit that twat when he's in the hospital.