According to the plot of Little Fox Demon Matchmaker, Mud Mountain Reddie might return. In the 103rd chapter of the manga, Bai Yuechu met Tushan Reddie in her dream. Reddie told Bai Yuechu that she was going to a very far place and asked Bai Yuechu to take good care of herself. This meant that Mud Mountain Reddie might leave for a while, but she didn't disappear completely. Instead, she might appear again in the future. In addition, in the 104th manga, Tushan Susu and Tushan Rongrong prepared food and gifts for Tushan Reddie before she left, which also indicated that Tushan Reddie might return. Although Tushan Reddie told Tushan Su Su and Tushan Rong Rong to take good care of herself before she left, she didn't explicitly say that she wouldn't come back. Therefore, Mud Mountain Reddie might return, but the exact timing and situation would depend on the subsequent development of the plot. While waiting for the TV series, you can also click on the link below to read the original work of " Little Fox Demon Matchmaker " to understand the plot in advance!