This was… not really a great time to be correct. Moon would have rather been wrong a thousand times. After all, it was better to be wrong - that Supernova hadn't said anything to Terra - than to be correct. Currently, Terra was looking at her with those same, deep hazel-brown eyes. Moon quickly threw her brain into overdrive. Currently, she had a few options.
One, tell Terra to shut up (which she could because of the oath - it made Terra always obey her) and then simply walk away until there was a better excuse. That was a good option, but Terra was undeniably several times stronger than Moon - not only because she was a host planet, but because she was quite literally standing on her planet. Moon didn't want someone who could easily kill her to be suspicious.
Two, try to gaslight her into thinking that the villain was Supernova, that he was using Terra instead of Moon, and that Moon was a good person. Of course, sooner or later Terra would realize Moon had been tricking her, and when the time came, it'd be over. Not that then.
Three, tell her the truth. A total blind wager, and if Moon spun the truth right, it could have potential rewards. Not to mention she would have Terra or Proxima, she supposed - one of the biggest weapons in the solar system. She was almost a walking nuke.
Moon pursed her lips and thought for a minute. Then, she said,
"And who gave this to you?"
"Supernova," Terra said, hesitantly, her voice wavering. Checkmate - she was already a bit wary.
"Who is this person? Can you trust them? What's even inside the envelope?'" Moon asked, internally laughing as she saw Terra's conflicted face. The poor thing probably still thought of her as a friend.
Then, with a pang of guilt, Moon realized what that meant. Terra cared for her… as a friend? None of the other planets could boast of anything close to that, save Neptune.
This…felt wrong.