So, I kinda wanted to clarify a few things. Or at least give the semi-official view on them.
First off, Nightwing isn't as easily fooled by Morgan as she thinks. You have to get up pretty early to beat the protege of the world's greatest detective, after all. This will come back to bite her later.
Second, Doctor Light is the female, good version here. In the comics she's an astronomer, actually, but Greg and Brandon have changed characters to fit in canon, so I thought I'd do the same.
Third, I haven't really elaborated on how/why Morgan fell in love with Kaldur. In essence, she admired him before he left to become Aqualad and was very happy to have someone who was willing to pay attention to her long enough to see past the cold exterior she wore at the time. Morgan also served her mandatory time in the military during the purist rebellion and had her entire squad slaughtered by purists. Consequently she clings very tightly to anyone who is truly close to her.
Fourth, Beast Boy, Cassie, and Impulse are not nearly as irritating as my protagonist makes them out to be. I rather like Cassie and Impulse, even if the former lacks much characterization. I'm indifferent to Beast Boy. Morgan simply doesn't like their less serious demeanors or their level of noise. In my head, I don't think she really has an emotional bond with anyone besides Kaldur, just ties of duty, which don't take priority to her way of thinking. I personally disagree with Morgan's all-consuming obsession, despite my own favor towards Kaldur.
Finally, Kaldur will not reciprocate her feelings. I'm deliberately writing it that way because many other stories introduce female OCs who have history with the main characters that make one character (often Robin/Nightwing, though I can't possibly imagine why) fall for them. In real life, sometimes the guy just doesn't get the girl, and vice versa. I prefer to write for the adventure, not the romance.