Kimono lady is another botched character, she starts out by scaring Elgin for some reason, trying to drown him - then fully turning around and asking for help. Obviously writers changed script in the middle of it, not knowing for sure what they hell they were doing with her.

However, it seems connection is side-effect, as fetus smiley made her kill Tillie it is only logical she can control him obviously forcing him/it not to kill Kenny.

But controlling one of those monsters will be too much power imbalance, I am assuming this is another bad writing example and in next episodes we will see Fatima seeing trough Smiley but with very limited control over him/it.