Liara is rather sceptical of the Lazarus project. She only agreed to help TIM because he mentioned that the collectors are looking for Shepards body...but she didn't know that Cerberus wants to ressurect Shepard at this point of the story (L: I don't understand, if Shepard is dead, what would you want with a corpse)
After Liara brought Shepard back Miranda tells her that Cerberus wants to revive Shepard. To which Liara responded, "Then I don't see the point, Miranda. Maybe I don't know what human traditions are ... But I really think you should let the dead rest.This isn't what I brought Shepard back for."
But what exactly is she supposed to do at this point? She had to make a decision (and I doubt Cerberus would have accepted a "no")
You missed the point I was making. Most people wonder why this was tasked to Liara specifically. The whole point of her being forced into such an important role above anyone else in Shepard's life. If you're romancing her, it probably wouldn't come off as creepy. If you aren't and never interacted much with her--it comes off as a weird position for her to take. Which is why a lot of people see as simple favoritism. Liara needed her own story for some reason and this was the perfect way to implement it, regardless of her relationship with Shepard. Devil's Advocate could be that all Shepard's other companions could die in ME2, so it had to be her. Other's may say that they could have easily just had someone from Cerberus take his body, after all, we're not privy to those events.
Also, no matter how skeptical she was, or how wrong she initially viewed it, she allowed Miranda to take him because she couldn't let him go. Full circle, again.
The whole thing was handled poorly. I honestly have nothing against Liara. I used her whenever I thought her abilities would be useful and I considered her and my Shepard friends. I don't really care one way or another. That doesn't mean that I can't understand why some would think it weird that Liara was the "chosen one", or why she had Shepard's armor on display like it was a another part of her collection, or why she won't give Shepard back his dog tags if he doesn't invite her aboard the Normandy (furthermore, why she has them in the first place), etc. etc.