I don't think Dramatica says anything about how the Guardian, or anyone representing any element, feels about the failure to achieve the Story Goal. (Let alone whether they get blamed.) It could be anything you imagine.
The only caveat is that it should be in line with the Story Judgment, which is the emotional assessment of the story as a whole (best felt / represented in the MC, but it's not limited to just the MC).
Don't forget that in some stories, the characters may decide the goal wasn't really worth it after all -- maybe it was misplaced, or the cost (Cost) of achieving it was too high.