Lady went inside the old ruin, and she found Toriel reading in front of the fire place. "Hey! so how's the new guest?" Lady asked.
Toriel smiled, but Lady could see in her eyes that she was concerned. "He is sleeping now. He is a sweet child. I hope that we shall all grow to be a happy family together." Toriel said.
"Tori, what aren't you telling me? I've known you long enough to see that something is on your mind. Spill the beans please." Lady said.
"He is human, like you. He fell from above, and now I am afraid that he will want to leave like the others. If he leaves, the other monsters will kill him, surely. I cannot allow that to happen." Toriel replied.
"There's an old saying where I'm from; If you love someone, set them free, if they return, it was meant to be. Tori, I know it hurts, but you have to let him go. Humans tend not to react well to being confined, even if it is for their own good. If you kept him here, he wouldn't be happy." Lady said.
Toriel smiled sadly. " I know. I am a monster, but I am not heartless. I wish I could let him be free, but the underground world is simply to dangerous for me to let him leave the safety of the ruins. He cannot defend himself, he is young and innocent. Would it not be better for him to stay here, in the safety of the ruins? It may be cruel to keep him here, but it's better than him being captured by Undyne, or worse, Him." she said.
"I don't know Tori. I think-" Lady began, but she was cut off by a boy's sleepy voice.
"Toriel? What are you talking about? who's this?" Frisk asked.
"Nothing to worry about my child. This is Lady, She inhabits the ruins with me." Toriel said, introducing Lady.
"Hi! nice to meet you!" Lady said, offering her hand to Frisk to shake. Frisk tried to shake it, but his hand passed through hers.
"What the?" Frisk asked puzzled.
"Oops! Sorry! that happens sometimes down here if I don't concentrate hard enough. Hold on a moment please." Lady said, and 2 white rings formed around her, turning her human. Frisk cautiously reached for her hand, and shook it in disbelief.
"What are you?" Frisk asked, amazed.
Lady blushed. "Well, I'm kinda a human and kinda a monster. I'm half ghost." she explained.
"Oh, that's cool! so why are you here? did you fall down a hole in the mountain too?" Frisk asked.
"Sorta. I wound up here when I took a wrong turn in the ghost zone, and I've been crashing here, trying to find a way home since." Lady said.
Toriel spoke up. "But there's no need to worry, no doubt you'll find a way soon and in the meanwhile you are welcome to stay here. Oh, did I mention I made a pie? it's butterscotch cinnamon! there's a slice of pie in the kitchen on the stove if you want it." she said, quickly changing the subject.
"Sounds good! Mind if I explore a bit?" Frisk asked.
"You may, but be careful child. Do not leave the house, the ruins have many dangerous traps that you've yet to encounter. It is best if you stayed inside. when you are done exploring, I can read you a book if you want." Toriel offered.
"Okay." Frisk said, and wandered off.
Lady yawned. "You know, I think I'll turn in. The day's excitement has made me tired." She said.
"Goodnight friend. I wish you pleasant dreams." Toriel said.
Lady smiled. "Thanks. I hope you have good dreams when you turn in as well." she said, and left the room. in the corner of the room, a little yellow flower smiled to itself as it watched Lady leave. Soon the fun would begin.