Zizzy and you had to leave Pony behind since Willow and the TSP took him to the refinery and locked him in a room with a infected which scratched him...Zizzy was extremely saddened by the lost of Pony so she has to do better and needs to protect everyone now.

Zizzy: "I won't fail again. I can't lose you too or anyone after just losing Pony. We'll need to work twice as hard. We have to keep going...for him."