Carmel felt her heart tangle into a mess, the actions of her best friends opening up to a past situation that she kept ignoring, the truth he knew but she hoped she would never have to face. Carmel knew it was cruel but she was hesitant, she didn't want to accept their confession but she also didn't want to reject their feelings and make their relationship sour.
Carmel and Carmelia knew that the two of them were cowards, but they couldn't bring themselves to cut the two off completely. Due to the very reason that both Nix and Melvin had helped her and once saved her life together, and it's the main reason they became so close as friends. Carmel and Carmelia still owe them a life debt, and they can't simply let that go.