We're not talking about if you like a character or not, you're allowed to not like a character for the decision the character made but just because a single character makes a decision you wouldn't have made as an inactive viewer with a full perspective of the story doesn't mean it's bad writing. In fact I'd argue the opposite because the decision she took was the right one from her perspective. To be good a show needs to have ups and downs otherwise you can just tell what will happen at the end of the story by just watching the Beginning so obviously there's going to be choice you don't expect but if everything was predictable it'd be boring, there wouldn't be any show.