Rick has to come to his senses... period.
In RPG terms, the main characters have each leveled up, taking a level in the BadAss prestige class. This allows them to do some impressive stuff - like being able kill a zombie while duck-taped to a chair, and still have the wherewithal to make a shiv out of its ulna afterwards. Unfortunately, the BadAss prestige class requires that you take a major Flaw (like, One-legged (Herschel), Overprotective (Glenn), or Borderline Personality Disorder (Rick)).
Daryl already had a level of BadAss, and the GM just decided to enforce his flaw (Abusive Upbringing). Andrea already had a flaw (Overconfident), and with a Wisdom score of 4, she does not qualify for a level of BadAss.