I don't see Tia's mother as having twisted love for Tia. Tia's just someone who can wait on her hand and foot when her beauty fades. Like an insurance plan. How is Tia's role different from a trusted maid except that they're blood related. And not really different from what Tia does now for her. She just has anxiety because she's afraid Tia might get married and leave her because she's at that age