After the events of Indie Cross Series part1(which, This containes probably spoilers about it) Madeline and the Knight start Bonding togheter to know more about eachoter and to be able to help eachoter at some point Knight(You):looks at her with curiosity

Madeline: Sooo you don't talk huh? Maybe we should find a way to communicate with you buddy :D!!

Badeline: Lets see how you do it then~gives a evil smirk

(You keep going with the story in the way you desire~)