I just ran across this one, and I guess I'm about halfway through (just started chapter 3, and it looks like there are 4 chapters). The more I see of Mora, the more I like her. She's cute, a hard worker, a bit of a dork (in an endearing way), and isn't wallowing in self-pity. She got dealt a shitty hand, she knows it's a shitty hand, and she's doing what she can to dig herself out. What happened with her ex-boyfriend is a mystery, though I maybe I'll see more of this story as things progress--but to me, the guy's an idiot.
Edit: OK, he's gay. I'd still say he's an idiot, but "young and immature" does explain a lot. But I'm just loving Mora (though it was an awfully bold move to invite her to move in without even checking with Heidi and Athena). Though now I'm curious about Mara.
I'd probably put Sadie in second place--she's pretty much a polar opposite in terms of looks, but I also think she's cute (and thought she was even before she started working out, though she could clearly stand to lose a few pounds). The "cousin" thing is neither here nor there for me; call her "childhood friend" for all I care, but she and MC are close, and really like and trust each other. And resolution of a longstanding crush always gets lots of points from me.
Hate to drop Val and Zenda (though I'll admit to being a little suspicious of both), but I think I like my roommates more. Athena really isn't my type in terms of looks, but I like her, and Heidi's a lot of fun.