Credit goes to Sayaka for the new ideas.
[x] "I... I care for you, Mami. You are very close to my heart. I never wanted to hurt you. I don't want to lose you. I don't know what I would do without you."
[x] Ask her to hear you out.
-[x] "I... I was scared to tell you. At first, I... I went with you because I knew you were a good person who needed a friend... which was why when you offered to let me live with you, I accepted. I knew you were a wonderful person who deserved better. Who deserves better. At the start, I just wanted to help. Fix things and save people. You know me.
-[x] "It... None of that was a lie, Mami. I... Learning from you. Helping save people with you. Being with you. That mattered to me. It matters to me."
-[x] "At first, I was still figuring things out and... didn't know how to tell you. I was scared and didn't know how to say it. It was just... too much, and I was worried about Kyubey finding out. Then there were days when there was just no time, and you were so hurt after you found out Kyubey had been lying to you that I couldn't stomach the idea of potentially making things worse. Of hurting you like that again. And it was easy to let it just stay untold, because in the end, when Kyubey was out of the way and I could have made time to tell you, the real reason why I allowed myself to put it off was because I was scared. Of hurting you, like I just did again. Of confessing that I hadn't told you all this time..."
-[x] "I know I should have said something sooner but... I just didn't know how to tell you. It was tearing me up inside..."
[x] Apologize. Plead for your case.
-[x] "I'm sorry, Mami. I am so, so sorry, more than I can say, for not telling you sooner. You... You matter to me. More... P-probably more than anyone else does. I want... I want you to be happy. I swear. That's the truth. The whole truth. I want you to be happy because you're Mami and you deserve to be."
[x] Ask her, beg her for forgiveness, for the chance to help, to set things right, for that is all you ask, all that you want. To see her happy. To enjoy life with her. For she is dear to your heart. Someone you deeply care for.
[x] If at any point, Mami visibly deteriorates or reacts...
-[x] "Mami? Please, talk to me? I... I don't want to see you hurt like this. Please... I know I don't deserve it, but please? I'm not like...him. I promise. Seeing you like this... hurts me so much..."
[x] Ask permission to cleanse at any point if her gem starts looking bad again. Beg if you have to. You're wiling to humble yourself for her sake.
-[x] If her gem gets really bad, just cleanse, no matter what.
[x] Keep your own gem clean. Continuous cleansing.
[x] With Mami's permission, continue the vote in abeyance.