The Crimes of Blake Belladonna
The Crimes of Blake Belladonna:
"Black Trailer": Blake Belladonna is an active member of the terrorist group 'White Fang'. Which she then abandons.
Volume 1: Blake Belladonna conceals her identity (badly) before outing herself as White Fang. She then abandons Team RWBY to try and 'redeem' the White Fang by proving they aren't working with Torchwick knowing full well they're a bunch of criminal Faunus.
Volume 2: Blake decides to abandon her team AGAIN by obsessing over the White Fang and refusing to care for herself. To the point where Yang had an intervention to force her to socialize with the team and reconnect with them so they wouldn't have another docks situation where Blake runs off to do something stupid. This results in her team following her into doing something stupid resulting in two fights that damage critical city infrastructure. That being the Highway and 'The Breach'.
Volume 3: Blake is the odd woman out. Actually, standing AGAINST Yang when Yang is framed for the 'crippling' of Mercury. She then abandons the fight in the middle of the battle of beacon to go challenge Adam to a 1v1 she knows she can't win resulting in Yang having to chase after her and lose an arm to save her life. Or at least distract Adam so she can save them both. And of course, Blake runs off after the fall.
Volumes 4-5: Blake then spends two seasons isolated on Menagerie and shows no indication of wanting to return until the White Fang try to burn down her home and kill her family and friends. She is instantly forgiven despite Yang having demonstrated acidic levels of hatred and vitriol whenever Blake is brought up.
Volume 6: Blake AGAIN draws off Adam into a 1v1 requiring Yang to come rescue her AGAIN instead of drawing Adam toward Yang.
Volume 7: Blake convinces Yang to side with the LITERAL CRIMINALS who are stealing civic resources and betray Ironwood's trust in them by disregarding strategic secrecy to keep the Amity Project concealed until such time it could be properly revealed when it was too late to be sabotaged. This has the knock-on effect in Volume 8.
Volume 8: Blake actually sides with Ruby AGAINST Yang over a completely pointless argument between the sisters designed to drive drama despite the fact they have the numerical ability to freely split up and achieve both their stated goals with no need for a drama-based split. And this is on top of their numerous lies and betrayals coming to light against Ironwood resulting in his mental break.
Ironically this also causes the failure of the Amity Project. As a result of Cinder chasing Penny and Ironwood being forced to prematurely reveal Amity, the communications satellite is damaged and isn't able to make it to space. Penny keeps it up high enough for just long enough for Ruby's completely pointless message to get out begging for help when it's too late before Penny, having sustained too much damage in the fight to drive off Cinder, fails to keep Amity aloft and it crashed back down to Solitas.
Yes I was surprised too when I finally watched it for the first time after dropping the show in Volume 6 after the closure of RT. Turns out Pietro and Maria DON'T die in space alone but somehow survived a crash and that's why Amity shows up in Volume 9 in Vacuo.
Though it does baffle me how the hell they got it there when Atlas has been destroyed along with all the manufacturing at the bottom of a giant lake.
So Blake does in fact have a documented tendency to go 'off the rails' and abandon people at the wrong time for the wrong reasons.