Oh man, that sucks for "Suzu". She just wanted to make Kikue happy! Kikue was a very strange person, but she made Kinako happy. She did so many things with Kikue. The reason she still likes the Suika Bun is because Kikue was excited for it!
So no wonder she wanted to return the favor. But I guess even she figured out that Kinako was Suzu when she was almost at the end.
I wonder who "Suzu" even was? She was probably Kikue's daughter, but that ending part seemed a bit ominous with what happened to her.