I was reading New Teen Titans #5 last night, and Raven tells the Titans about how she first went to the Justice League for help against Trigon. Unfortunately, Zatanna tells the Leaguers that she senses evil within Raven, and so this may be a trap. Not surprisingly, this means the League is not going to be lending a hand.
I wonder though, did Zatanna ever apologize to Raven? You know, a little, "Hey, I'm sorry I told the League there was evil within you, and so we shouldn't trust you, even though you were telling the truth about an evil force moving towards our universe, bent on conquest. Friends?" True, Zatanna was right about the evil, Raven admits as much, but really, they're the Justice League, they get lured into traps all the time. Heck, Hal Jordan probably got trapped multiple times a week, just by villains putting up signs saying "Ladies Night" over the entrances to their secret lairs. And they always escape. So what's one more trap, if that's what it would have turned out to be (which it wouldn't have, but obviously the JLA wasn't aware of that)?
Of course, I'm not clear on whether the League outright told Raven thanks, but no thanks, or whether Zatanna's comment was enough for Raven to figure she needed a new plan, leading her to give up on using the League on her own. That might make a small difference, but really now, I think everyone has some evil in them. That doesn't mean they can't sincerely want to do good, or that you shouldn't trust them.