Friend, your attitude is the reason you didn't get cast, get over yourself!

Not sure if you want to actively try to help your friend or not.

If you do, it seems like one approach would be to split the problem into two separate points:

Point 1: A neutral discussion with her explaining how when selecting cast members, your responsibility is to the production only, and your goal is to have the best person for the job. Period. Friendships should have no bearing on this. The fact of the matter is that there are loads of highly qualified folks trying for the same spot, and you would be doing a disservice to the production if you selected anyone but the best. And this should not reflect on her quality in any way—she should be able to observe other highly qualified folks who were not chosen.

Point 2: A frank discussion, completely divorced from the casting process, about her professional demeanor. Clear statements about how behavior is perceived by others, as well as firm recommendations as to what should never appear on FB. This is the kind of thing that probably will just piss her off, but maybe she might reflect on it later on and grow from it.

Both of these points should be made in private.

That’s how I would approach it.

You are right, and this is a great quote. If I may, I’d like to use it sometimes. Actually, I may print it in 50-point bold font & tape it to my PC.

That said, is it possible that this person is really insecure and really emotionally fragile? Not that this is any excuse, not that you should cast them. But it might be a fair assessment that they might find true about themselves when they pull together the facts to draw their own conclusions.
(Given enough time, almost everybody does) Its one of those ‘moment of truth’ moments where the dawn will finally break for them, allowing them to see themselves as others do. And they’ll either seriously work towards growing beyond the boundaries of these flaws… or possibly decide that they just don’t have thick enough skin for that career.

Its funny. I know Nothing about acting. Less than nothing. Maybe I was a spoiled kid though. I really hope I [del]grew[/del] grow beyond that though. I hope the Board will keep me honest when it can.