Kind of difficult for me to translate the first big bubble because I can't tell what person she is talking about. All I can translate is "By (someone), this is (someone)'s secret!!"
That's the Shinigami for the Death note Takano is writing on. And she mistook it for a schedule death book and started to write her name on it to claim that it's hers but she died in process so the soul that's leaving her body is her. XD