rhaenyra doesn't hold up her end of the deal not only because she wonders if alicent has betrayed her but also because she doesn't want to let alicent leave, she can't let her leave, because she is such an integral part of rhaenyra. she has already lost so much of herself, she can't afford to lose another piece. alicent knows her in ways other people don't, as teenagers alicent was the only person she could rely on for emotional support. she trusts that alicent wouldn't lie to her, she trusts that she can be the grounding presence that she needs. rhaenyra doesn't want to become something she isn't and alicent is the best person to remind her of who she is at her core and to even be that other side of her that might end up getting crushed by the crown
