The falling action is when they are celebrating her catching the spy. People from all over the town were giving her fruit baskets, vegetables and more. When she catches the spy she is shocked that there are actual spies. No one belived her.
Butter is a symbol because Butter represents a little it of hope. Butter represents hope because she if she didn't have butter she wouldn't have any thing to do all day. Butter had become one of her best friends. In the end she missed Butter when she left.
After Mam had come to take them back Ada did not want to leave. The first night they are back Mam's Flat gets bombed but Jamie and Ada get out alive. Then the next morning Susan was there to take them back to her house. When they got back to London Susan's house had also been bombed. Everyone around the neighborhood thought that they were under the house.