Board Thread:Episodic and Issue Discussion/@comment-47881-20130302155201/@comment-5624498-20130303195538

M'gann is clearly the case of the individual who got rejected by those she normally lived around, tries too hard to fit in elsewhere and tries to mold others to be what she wants them to be in her world.

Plus... we haven't really touched upon what happened to Marie Logan and I suspect that made M'gann go off the deep end. Hopefully we get a brief explanation in one of the two final episodes.