Whose side?

So, I’ve always had my own opinions about this specific situation/topic. I truly believed that Maddie didn’t know anything about her and Kalani doing the duet, Two Sapphires, until literally the last minute and Maddie was talking about the duet, saying they did it in Nevo (don’t know how to spell it). Christi and Kelly come back tenfold, saying that Melissa and Maddie lied to Chloe and Christi told Chloe “you know who your real friends are” or something along that line. What is your take on it? Do you think Maddie knew she was doing the duet?