So, in the span of like a day or two, Thea gets dumped by her BF, kidnapped by a deranged nutcase with a cool eye-patch, discovered that her real dad is another deranged nutcase, AND that both her mother and brother (the one person who she's completely trusted) lied to her about you. You know, this would be a great time for Papa Merlyn to dropped by and have a little chat with her, maybe bring her around to seeing his side of things. That'd be the ultimate revenge on Oliver and Moira, corrupting Thea into joining him and becoming his protégé.