Sarah is a witch. What is the ending of this novel?

Before she could think clearly, some powerful tentacles came at her, wrapped around her neck, wrist and waist, and lifted her into the air. "Oooo ..." Sarah wanted to talk, and her mouth was blocked. The whole person was turned upside down, and panic made her struggle desperately.

The ground began to shake again, and the beast screamed to run out, but a voice stopped it.

"Don't move ..." Ink's face gradually emerged from the wall, followed by his body, hands and feet. He walked slowly through the wall to Sarah, grabbed her by the throat and pushed her into the monster's mouth.

"Go in! Sarah, this is your last chance ... "Mo looked at her meaningfully with a skeptical expression on his face. "If you can come back safely from this enchantment channel in seven days, you will have the silver attribute I created ... my child, you will become the first silver witch in history!"

Mo watched Sarah fall into the endless abyss and disappear from sight. He straightened up and put a spell on the monster's mouth.