Yep. Like I said Michonne has been turned into basically a psycho for no other reason than to create "drama". She assists them on the rescue mission but then goes off on her own to fight the Governor for NO LOGICAL REASON. And like we said earlier Andrea also does stuff for no logical reason at all
This is possibly the single biggest problem with the show outside of the ridiculousness of the premise (sorry but there is no way thr zeds would be anything more than decayed pulp more than a year after the plague). Aside from Darryl, none of these characters are true to their own personalities on a consistent basis - that is, they change personality from episode to episode. Case in point - Rick's jumping from calm and collected to "apocalypse now" and then back again. Ditto Michonne, Ditto Andrea, Ditto the Governor even. And worse, aside again from Darryl not one of the other characters is someone you want to succeed - a.k.a. root for.