Elyvern wrote...
@Nightwriter - Helping Miri with her sister probably plays a part, but for me personally, it feels like she's presenting Shepard with a reward in return by romancing him.
@fongiel - but that means she becomes just one of the many lives that Shepard the natural leader and hero has touched and influenced, and not so much Shepard the man himself, which I feel, makes less of both of them.
The reason why I'm asking is it's obvious that Miri is a person with exacting expectations and arguably someone who will find it hard to sustain a serious relationship. If that's the case, then it can't be everything goes, and it can't be for shallow reasons either.
Unfortunately, due to the innumerable permutations of Shepard's background, service history, and morality, it's impossible to place exactly what it is that makes
your Shepard different from Jacob. The only thing they all have in common is that fire. Yes, it's cheap and overdone (every video game/movie hero seems to have some undefineable property that makes them special - undefineable because the writers can't be bothered to define it) but that's all we have. I like to think it's the fire that intrigues Miranda, but it's something specific about your Shepard that keeps her around.
In my case, my Shepard's charisma is all an act. He's actually an extremely guilt-ridden individual that actually struggles with some of the same issues Miranda does. Other than his quest to stop the Reapers, he really doesn't know who he really is anymore. He's an example of what happens when an once-idealistic soldier is forced to make one too many sacrifices, watch one friend too many die, witness one too many horrors that make him question the righteousness of those he fights for. Basically, Miranda sees something of herself in him. They can understand each other in a way no one else can. That's just my story. Yours will be different because Shepard is intended to be a blank slate.
I don't really like the idea that the primary reason Miranda is attracted to Shepard is because he helped her with her sister. Miranda's sister is a catalyst, but making her the foundation of the relationship makes it too dependent on chance. What if the incident with Miranda's sister had happened five years earlier and Jacob had been the one to help Miranda through it? Would Miranda and Jacob be in a serious relationship in ME2? For some reason I doubt it.