I disagree with Trancendent Egg. Adora's never had trouble "allowing herself to have emotional attachments". She has always had healthy friendships. Even her relationship with Catra was pretty healthy before they had their falling out over Adora leaving the Horde.. New She-Ra represents Adora drawing She-Ra from herself rather than from the First Ones sword. She looks more like Adora because she comes from Adora rather than coming from Mara's sword. She -does- generally come out when Catra is in danger, that's because She-Ra is literally powered by love, so Adora can only get her when she is motivated by her love.