She holds her chin high, frown steady in place. "If you can prove to me- prove to me you're safe for Asriel to be around, you may continue to interact. This means, no attacking anyone, no bringing him into any dangerous schemes or murder ploys. Keep him away from your feuds."

"If he is to be your friend, you need to keep him away from the dangerous things you involve yourself with. I do not know your nature, but you are not human. You are not as... dangerous or cruel." This is one of the few times she will admit as much aloud. "You can do terrible things, but you need to consider what and who you can lose from doing these things."

Toriel cannot lose her only son again. Not after she's only gotten him back.