So Lav would know Angie, but I don't know if they'd get on. they're a very different sort of girl, and Angie's got not time or patience for anything she considers girly. She'd have camaraderie but I'm not sure it'd be much beyond that.
Roger might've hit on her a time or two, and we can discus how that could've played out.
Bianca knows OF her. But not very well at all, and I doubt they'd really have gotten any chance to speak to each other.
And as for Blaise? He doesn't much care for Lavender at all, and cares even less what she thinks of him.