It would help if you do point out where she is being dishonest.
Maybe show the scene where the gang members are being 'obviously evil' other that just hanging around the club as... I dunno bouncers.
Because if they had showed Yang looking around and having the gang members look at her suspiciously, her seeing one of them threaten a man with his axe, or even Junior acting more aggressive then you would have had a point.
But of course, according to you there are obvious scenes of them being a bad evil gang. And here's the thing.
Show it.
Show us where the gang is being obviously evil in an obviously shady evil way.
Because even the whole 'Junior' thing could be seen less as 'Oh he's a gang member' and more as 'Oh she knows his name'. Not to mention the usual trope of bar owners or bar tenders knowing everything about everyone could be the one used rather than information broker.
Yeah, I can play with tropes to RWBY.